Решите: 3(0.9х - 1)-(х+0.6)=-0.2 ; 7-(3.1-0.1у)=–0.2у

Question

Решите: 3(0.9х - 1)-(х+0.6)=-0.2 ; 7-(3.1-0.1у)=–0.2у

Answer 1

2.7x-3-x-0.6=-0.2
1.7x=3.4
x=2

7-3.1+0.1y=-0.2y
0'3y=-3'9
y=-13