15:2.5=0.8Х 15 БАЛЛОВ

Question

15:2.5=0.8Х
15 БАЛЛОВ

Answer 1

0,8x=15:2,5. 0,8x=6. x=6:0,8. x=7,5.

Answer 2

15:2.5=0.8Х
6=0.8Х
-0.8Х=-6
Х=-6:(-0.8)
Х=7.5