Question

4,2 x +1,7 x-1,5 x=7,92

Answer 1

4,2х+1,7х-1,5х=7,92
4,4х=7,92
Х=7,92:4,4
Х=1,8

Answer 2

4,2х+1,7х-1,5х=7,92
4,4х=7,92
440х=792
х = 1,8