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\(a,\Rightarrow6x+70=130\Rightarrow6x=60\Rightarrow x=10\\ b,\Rightarrow240=\left(x+70\right):14-40\\ \Rightarrow\left(x+70\right):14=280\\ \Rightarrow x+70=3920\Rightarrow x=3850\\ c,\Rightarrow x-15=75\Rightarrow x=90\\ d,\Rightarrow\left(x+175\right):5=680-30=650\\ \Rightarrow x+175=3250\Rightarrow x=3075\\ e,\Rightarrow x-4867=1004523\Rightarrow x=1009390\\ f,\Rightarrow x+32-17=24\Rightarrow x=9\\ g,\Rightarrow3\left(x+1\right)=54\Rightarrow x+1=18\Rightarrow x=17\\ h,\Rightarrow19\left(35:x+3\right)=152\\ \Rightarrow35:x+3=8\Rightarrow35:x=11\Rightarrow x=\dfrac{35}{11}\)
a, \(420+65:4=\left(x+175\right):5+30\)
\(\Rightarrow\left(x+175\right):5+30=420+16,25\)
\(\Rightarrow\left(x+175\right):5=420+16,25-30=406,25\)
\(\Rightarrow x+175=2031,25\)
\(\Rightarrow x=1856,25\)
b, \(\left(32.15\right):2=\left(x+70\right):14-40\)
\(\Rightarrow\left(x+70\right):14-40=480:2\)
\(\Rightarrow\left(x+70\right):14=240+40=280\)
\(\Rightarrow x+70=3920\Rightarrow x=3850\)
c, \(x-4867=\left(175.2050.70\right):25+23\)
\(\Rightarrow x=39462500:25+23+4867\)
\(\Rightarrow x=1578500+23+4867=1583390\)
Chúc bạn học tốt!!!
a) x - 4867 = 2050.70. (175: 25) + 23
x - 4867 = 2050.70.7 + 23 = 1004 500 => x = 1 004 500 + 4867 = 1 009 367
b) => (697 / 15) : x + 364 : x = 17 => \(\left(\frac{697}{15}+364\right):x=17\)
=> \(\frac{6157}{15}:x=17\) => x = \(\frac{6157}{15}:17=\frac{6157}{255}\)
c) => \(341=\frac{x+350}{x+315}\) => 341.(x+315) = x + 350 => 341x + 341.315 = x + 350
=> 341x - x = 350 - 341.315 => 340x = -107 065 => x = -107 065 : 340 =....
mik chỉ biết làm phần b thôi thông cảm
đáp án phần B là 17
Good luck !
x - 4867 = (175.2050.70):25 + 24
x - 4867 = 251125:25 + 24
x - 4867 = 1004500 +24
x = 1004500 + 24 + 4867
x = 1009391
a) 420 + 65.4 = (x+175):5+30 b) x - 4867 = (175.2050.70):25+23
(x+175):5+30 = 420 + 65.4 x - 4867 = 1004523
(x+175):5+30 = 680 x = 999656
(x+175):5 = 650
x+175 = 3250
x = 3075
a﴿ x ‐ 4867 = 2050.70. ﴾175: 25﴿ + 23 x ‐ 4867
= 2050.70.7 + 23 = 1004 500
=> x = 1 004 500 + 4867 = 1 009 367
X - 4867 = 25112500 : 25 + 23
X - 4867 = 1004500 + 23
X - 4867 = 1004523
X = 1004523 + 4867
X = 1009390
x-4867=(175.2-50.70):25+23
=>x-4867=(350-3500):25+23
=>x-4867=-3150:25+23
=>x-4867=-126+23
=>x-4867=-103
=>X=4764
x-4867=(175.2050.70):25+23
x-4867=25112500:25+23
x-4867=1004500+23
x-4867=104523
x =104523+4867
x =1009390