50X=80(X-1.5) решите уравнение

Question

50X=80(X-1.5) решите уравнение

Answer 1

50x=80(x-1.5)
50x=80x-120
0=80x-120-50x
120=30x
120/30=x
x=4

Answer 2

50х=80х-120
50х-80х=-120
-30х=-120
х=4