Question

( х + 10 ) * 2 = 20 помогите пожайлуста

Answer 1

( x+10 ) * 2=20
x+10=20/2
x+10=10
x=10-10
x=0

Answer 2

(x+10)*2=20
(x-10)=20:2
X-10=10
10-10
X=0