151 - 2 x ( x - 6 ) = 2227 : 17
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Theo bài ra , ta có :
\(151-2\left(x-6\right)=2227:17\)
\(\Leftrightarrow151-2\left(x-6\right)=131\)
\(\Leftrightarrow2\left(x-6\right)=20\)
\(\Leftrightarrow x-6=10\)
\(\Leftrightarrow x=16\)
Vậy \(x=16\)
![](https://rs.olm.vn/images/avt/0.png?1311)
151 - 2(x-6) = 2227 :17 = 131
2(x-6) = 151 - 131=20
x - 6 = 20 : 2=10
x = 10+6 =16
151-2.(x-6)=2227:17
151-2.(x-6)=131
2.(x-6)=151 - 131
2.(x-6)=20
x-6=20:2
x-6=10
x=10+6
x=16
![](https://rs.olm.vn/images/avt/0.png?1311)
155 - 2.(x - 6) = \(\frac{2227}{17}\)
2.(x - 6) = 155 - \(\frac{2227}{17}\)
x - 6 = 24 : 2
x = 12 + 6
x = 18
![](https://rs.olm.vn/images/avt/0.png?1311)
\(151-2\times\left[x-6\right]=2227:17\)
\(151-2\times\left[x-6\right]=131\)
\(2\times\left[x-6\right]=151-131\)
\(2\times\left[x-6\right]=20\)
\(x-6=20:2\)
\(x-6=10\)
\(x=10+6\)
\(x=16\)
151-2x[x-6]=131
2x[x-6]=151-131
2x[x-6]=20
x-6=20:2
x-6=10
x=10+6
x=16
![](https://rs.olm.vn/images/avt/0.png?1311)
a)
151 - 2 x ( x-6 ) = 2227 : 17
2 x ( x-6 ) = 131
2 x ( x-6 ) = 151 - 131
2 x ( x-6 ) = 20
x-6 = 20 : 2
x - 6 = 10
x = 10 + 6
x = 16
b)
\(\dfrac{2}{3}-\dfrac{1}{4}=\dfrac{5}{12}\\ X=\dfrac{5}{12}:\dfrac{1}{3}=\dfrac{5}{4}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(x-1\frac{4}{5}=\frac{10}{5}\)
\(\Rightarrow x=2+1\frac{4}{5}=3\frac{4}{5}=\frac{19}{5}\)
b) \(5,85:x=26-25,5\)
\(\Leftrightarrow5,85:x=0,5\)
\(\Rightarrow x=5,85:0,5=11,7\)
c) \(151-\left(-2\right).\left(x-6\right)=2227:17=131\)
\(\Rightarrow\left(-2\right).\left(x-6\right)=151-131=20\)
\(\Rightarrow\left(x-6\right)=20:\left(-2\right)=-10\)
\(\Rightarrow x=-4\)
d) \(\frac{2}{3}-\frac{1}{3}x=\frac{1}{4}\)
\(\Rightarrow \frac{1}{3}x=\frac{2}{3}-\frac{1}{4}=\frac{5}{12}\)
\(\Rightarrow x=\frac{5}{12}:\frac{1}{3}=\frac{5}{4}\)
dấu chấm (.) là dấu nhân nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 100 - 7.(x-5) = 68
7.(x - 5) = 100 - 68 = 32
x - 5 = \(\frac{32}{7}\)
x = \(\frac{32}{7}+5=\frac{67}{7}\)
b) 2(x-6)+2227:17=151
2( x -6) + 131 = 151
2 (x - 6) = 20
x - 6 = 20 : 2 = 10
x = 10 + 6 = 16
![](https://rs.olm.vn/images/avt/0.png?1311)
a,\(2,5.16,27.4+7,3=16,27.10+7,3=162,7+7,3=170\)
b,\(8.6.10+4.25.12+3.16.31+2.34.24=48.10+48.25+48.31+48.34\)
\(=48.\left(10+25+31+34\right)=48.100=4800\)
c,\(78.31+78.24+78.17+22.72=78\left(31+24+17\right)+22.72=78.72+22.72\)
\(=72.\left(78+22\right)=72.100=7200\)
d,\(102.67-34.51=102.67-17.102=102.\left(67-17\right)=102.50=5100\)
đéo hiểu thì cút nhé đéo ai khiến m trả lời cả . ngu thì nói ngu đi đừng bày đặt t ghét nhất là cái loại như m đấy ạ
Bài 2
a, \(1-\left(12,5+x-4,25\right):21,75=0\)
\(=>21,75-12,5-x+4,25=0\)
\(=>13,5-x=0=>x=13,5\)
b,\(x.101-x+72.99+72=21050\)
\(=>100x+72.100=21050\)
\(=>100\left(x+72\right)=21050\)
\(=>x+72=210,5\)\(=>x=138,5\)
c,\(151-2\left(x-6\right)=2227:17\)
\(=>151-2\left(x-6\right)=131\)
\(=>2\left(x-6\right)=20\)
\(=>2x=32=>x=16\)
d,\(\left(x+4\right)+\left(x+6\right)+\left(x+8\right)+...+\left(x+26\right)=210\)\(=>12x+\left(4+6+8+...+26\right)=210\)
\(=>12x+180=210=>12x=30\)
\(=>x=\frac{30}{12}=\frac{15}{6}=\frac{5}{2}\)
\(151-2\cdot\left(x-6\right)=2227:17\)
\(151-2\left(x-6\right)=131\)
\(2\left(x-6\right)=151-131\)
\(2\left(x-6\right)=20\)
\(x-6=20:2\)
\(x-6=10\)
\(x=10+6\)
\(x=16\)