Question

Решите уравнение
(3х+5х)умножить на18=144

Answer 1

(3х +5х) * 18 = 144
8х = 144 : 18
х = 8 : 8 
х = 1

Answer 2

(3х+5х)*18=144
8х*18=144
144х=144
х=1
проверка
(3*1+5*1)*18=144
(3+5)*18=144
8*18=144
144=144