Question

помогите пожалуйста 5(х+3)+7=3(х+12)

Answer 1

5(x+3)+7=3(x+12)
5x+15+7=3x+36
5x-3x=36-15-7
2x=14
x=7

Answer 2

5(x+3)+7=3(x+12); 5x+15+7 =3x+36; 5x+22=3x+36; 5x-3x=36-22; 2x=14; x=14:2; x=7