Question

3. 5-x=3x+4
4. x-7+8x=9x-3-4x
5. 11x+42-2x=100-9x-22

Answer 1

3)5-x=3x+4
-x-3x=4-5
-4x=-1
x=1/4=0.25
4)x-7+8x=9x-3-4x
x+8x-9x+4x=-3+7
4x=4
x=1
5)11x+42-2x=100-9x-22
11x-2x+9x=100-22-42
18x=36
x=2

Answer 2

пасиб