Question

5 . x + 225 = 700

7 . x - 400 = 90

600 : x + 40 = 100

152 : x - 5 = 0

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Answer 1

`5x = 700 -225`

`5x = 475`

`x = 95`

`7x - 400 = 90`

`7x=490`

`x = 70`

`600 : x = 60`

`x = 600 : 60`

`x = 10`

`152 : x = 5`

`-> x= 152/5`

Answer 2

\(7x-400=90 \)
\(\Rightarrow7x=490\)
\(\Rightarrow x=70\)
\(600:x+40=100\)
\(\Rightarrow600:x=60\)
\(\Rightarrow x=10\)
\(152:x-5=0\)
\(\Rightarrow152:x=5 \)
\(\Rightarrow x=\dfrac{152}{5}\)