Tìm x :
36 nhân x + 12,67 = 489,67
x nhân 326,63 + 245,37 = 429
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36 x X + 12,67 = 489,67
=> 36 x X = 477
=> X = 13,25
X x 326,63 + 245,37 x X = 429
=> X x ( 326,63 + 245,37 ) = 429
=> X x 573 = 429
=> X = 0,75
36 x X + 12,67 =489,67
36 x X =489,67- 12,67
36 x X =477
X =477 : 36
X =13,25
X x 326,63 + 245,37 x X =429
X x (326,63 + 245,37) =429
X x 572 =429
X =429 : 572
X =0,75
a ) 36 * x + 12 ,67 = 489,67
36 * x = 489,67 - 12,67
36 * x = 477
x = 477 : 36 = 13,25
b ) x * 326,63 = 245,37
x = 245,37 : 326,63 = 0,7512169733....
c ) 29,5 * ( x + 10 ,25 ) = 376,125
x + 10 ,25 = 376,125 : 29,5
x + 10 ,25 = 12,75
x = 12,75 - 10,25 = 2,5
d ) 748 : (x - 31,72) = 13,6
x - 31,72 = 748 : 13,6
x - 31,72 = 55
x = 55 + 31,72 = 86,72
a, 36 * x + 12,67 = 489,67
36 * x = 489,67 - 12,67 = 477
x = 477 : 36 = 13,25
b, x * 326,63 = 245,37
x = 245,37 : 326,63 = 0,75
c, 29,5 * (x + 10,25) = 376,125
x + 10,25 = 376,125 : 29,5 = 12,75
x = 12,75 - 10,25 = 2,5
d, 748 : ( x - 31,72 ) = 13 ,6
( x - 31,72 ) = 748 : 13,6 = 55
x = 55 + 31,72 = 86,72
y x 326,63 + 245,37 x y = 429
y x ( 326,63 + 245,37 ) = 429
y x 572 = 429
y = 429 : 572
y = 0,75
\(y\cdot326,63+245.37\cdot y=429\)
\(y\cdot\left(326,63+245,37\right)=429\)
\(y\cdot572=429\)
\(y=429:572=\frac{3}{4}\)
X x 326,63 + 245,37 x X = 429
X x (326,63 + 245,37) = 429
X x 571 = 429
X = 429 : 571
X \(\frac{429}{571}\)
\(x\times326,63+245,37\times x=429\)
\(x\times\left(326,63+245,37\right)=429\)
\(x\times572=429\)
\(x=429:572\)
\(x=0,75\)
dễ cũng ko dễ cũng ko khó
\(x\times326,63+245,37\times x=429\)
\(x\times\left(326,63+245,37\right)=429\)
\(x\times572=429\)
\(x=429:572\)
\(x=0,75\)
a) \(36x+12,67=489,67\)
\(\Rightarrow36x=489,67-12,67\)
\(\Rightarrow36x=477\)
\(\Rightarrow x=477:36\)
\(\Rightarrow x=13,25\)
Vậy \(x=13,25\)
b) \(x.326,63=247,37\)
\(\Rightarrow x=247,37:326,63\)
\(\Rightarrow x=0,7573401096\)
Vậy \(x=0,7573401096\)
c) \(29,5\left(x+10,25\right)=376,125\)
\(\Rightarrow x+10,25=376,125:29,5\)
\(\Rightarrow x+10,25=12,75\)
\(\Rightarrow x=12,75-10,25\)
\(\Rightarrow x=2,5\)
Vậy \(x=2,5\)
d) \(748:\left(x+31,72\right)=13,6\)
\(\Rightarrow x+31,72=748:13,6\)
\(\Rightarrow x+31,72=55\)
\(\Rightarrow x=55-31,72\)
\(\Rightarrow x=23,28\)
Vậy \(x=23,28\)
\(36x+12,67=489,67\)
\(36x=489,67-12,67\)
\(36x=477\)
\(x=\frac{477}{36}\)
\(626,63x+245,37=429\)
\(\Rightarrow626,63x=183,63\)
\(x=\frac{183,63}{626,63}\)
\(x=...\)(dùng máy tính mà bấm nha bạn)