Question

решить уравнение 0,2( 7- 2y)= 2.3- 0.3(y-6)

Answer 1

1.4-0.4y=2.3-0.3y-1.8
-0.4y+0.3y=1.8+2.3-1.4
-0.1y=2.7
y=2.7:(-0.1)
y=-27