Question

Даю 10 баллов, срочно!!!!

Answer 1

x/5×5/8=6,4/7×1/2

x/45/8=32/5/15/2

x/45/8=32/5×2/15

x/45/8=64/75

x=64/75×45/8

x=8/5×3/1

x=24/5

x=4,8