Question

0.6y+2.3=0.4y-1.7 решите все плиз

Answer 1

0.6y-0.4y=-2.3-1.7
0.2y=-4
y=-4/0.2
y=-20

Answer 2

0.6y-0.4y=-1.7-2.3
0.2y=-4
y=-20