уравнение 18+(16-Х)*8=90

Question

уравнение 18+(16-Х)*8=90

Answer 1

18+(16-х)*8=90

18+128-8х=90

-8х=90-18-128

-8х=-56

х=-56:(-8)

х=7

Answer 2

18+(16-Х)*8=90

-2*(4х-73)=2*32*5

146-8х=90

-8х=-56

Х=7