Question

решите уравнение:
1) -8/15х - 11 = 4/9х + 17
2) -3(4-5у) + 2(3 - 6у) = -3,9.

Answer 1

1. -8/15x-11=4/9x+17|•135x
-72-1485x=60+2295x
-1485x-2295x=60+72
-3780x=132|÷(-3780)
x=-0.034
2. -12+15y+6-12y=-3,9
15y-12y=-3,9+12-6
3y=2,1|÷3
y=0,7