Question

Решите уравнения, прошу :

Answer 1

1) 30-21x-x=-3
30+3=22x
33=22x
x=33/22=1.5
2)45-15x-5x=-10
45+10=20x
55=20x
x=2.75
3)32+28x-10x=8
18x=-24
x=-1 6/18=-1 1/3
4)8-14x+8x=3
8-3=6x
5=6x
x=5/6