Решите уравнение 0,4х+3=0,2(3х+1)-х

Question

Решите уравнение 0,4х+3=0,2(3х+1)-х

Answer 1

0.4х+3=0.6х+0.2-х
0.4х+3=0.2-0.4х
0.4х+0.4х=0.2-3
0.8х=-2.8
х=2.8÷0.8
х=3.5