Question

(7x-1.8):2=1.9 решение

Answer 1

(7х-1.8):2=1.9
7х-1.8=3.8
7х=5.6
х=5.6:7
х=0.8

Answer 2

(7x-1.8):2=1.9
7-1.8=5.2
x=5.2
5.2:2=1.9 ))