РЕШИТЕ УРАВНЕНИЕ. 1.) 17 – 2(6х – 5) = 4(7х – 2) 2.) 6х – 3(5х + 4) – 2(7х – 3) = –6

Question

РЕШИТЕ УРАВНЕНИЕ.
1.) 17 – 2(6х – 5) = 4(7х – 2)
2.) 6х – 3(5х + 4) – 2(7х – 3) = –6

Answer 1

1. 17-12x+10=28x-8
    -12x+27-28x+8=0
    -40x+35=0
    -40x=-35
     x=0.875
2. 6x-15x-12-14x+6=-6
    6x-29x-6+6=0
    -23x=0
     x=0