Question

(0,2х+0,4х)×3,5=6,3
=3,2:3,3 =(2,4×3,3)=74

Answer 1

(0,2х+0,4х)×3,5=74
0.6х×3.5=74
0.6×3.5=2.1х
2.1х=74
х=74÷2.1
х=35.2381