Question

решите уравнение 7(у-6)/4=5(у+1)/5-3(у+2)

Answer 1

ОЗ 20
7(y-6)/4=y+1-3y-2
7(y-6)/4=-2y-1
7(y-6)=4(-2y-1)
7y-42=-8y-4
7y+8y=-4+42
15y=38
y=38/15
y=2 8/15