Question

30/100*(x+35)=x
x=?
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Answer 1

(30/100)·(x+35)=x
3(x+35)/10=x
3(x+35)=10x
3x+105=10x
3x-10x=-105
-7x=-105    inmultim -1
7x=105
x=105/7
x=15

Answer 2

     
$\frac{30}{100}*(x+35)=x \\ \\ \frac{3}{10}*(x+35)=x \\ \\ 3(x+35)=10x \\ 3x+3*35=10x \\ 10x-3x=3*35 \\ 7x=3*35 \\ \\ \\ x= \frac{3*35}{7} =3*5=\boxed{15}$