Question

Giúp mình nốt câu này với ạ

Answer 1

\(a,125:\left(x+10\right)=5\\\Leftrightarrow x+10=25\\\Leftrightarrow x=15\\ b,52-x:12=24\\ \Leftrightarrow x:12=28\\ \Leftrightarrow x=336\\ c,45x=205-25\\ \Leftrightarrow45x=180\\ x=4\\ d,42x-84=168\\ \Leftrightarrow42x=252\\ \Leftrightarrow x=6\)

Answer 2

`125 : (x +10) = 5`

`x + 10  =125 : 5`

`x + 10=25`

`x=25-10`

`x=15`

_____________________
`52 -x:12=24`

`x:12=52-24`

`x:12=28`

`x=12xx28`

`x=336`

______________________

`45.x =205-25`

`45.x  = 180`

`x=180:45`

`x=4`

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`42.x-84=168`

`42.x = 168 + 84`

`42.x=252`

`x=252:42`

`x=6`