Question

Решите уравнение
1.-6(9-5х)=9х+9
2.-3(1+4х)=-4х-5
3.-6(-5-7х)=-8х+2

Answer 1

1.-6(9-5х)=9х+9
-54+30x=9x+9
21x=63
x=3
2.-3(1+4х)=-4х-5
-3-12x=-4x-5
-8x=-2
x=0,25

3.-6(-5-7х)=-8х+2
30+42x=-8x+2
50x=-28
x=-0,56