Question

0,8х – 3,6 = 5,4 – 1,2х

Answer 1

0.8x-3.6=5.4-1.2x
0.8x+1.2x=5.4+3.6
2x=9 /÷2
x=4.5

Answer 2

0.8×+1.2×=3.6+5.4
2×=9
×=9:2
×=4.5
Проверка
4.5×0.8-3.6=5.4-1.2×4.5
3.6-3.6=5.4-5.4
0=0