Question

3x+5=2x-8 3x-6=5x+4 7x-14=6x-1 8x+5=-1 2(x+3)=(x+4)

Answer 1

3x+5=2x-8
3x=2x-8-5
3x-2x=3
5x=3
x=3/5

3x-6=5x+4 
3x=5x=4-6
3x-5x=4-6
5x-3x=6-4
2x=2
x=2/2
x=1

7x-14=6x-1
14=6x-1+7x
14+1=6x+7x
15=13x
x=15/13

8x+5=-12
8x=-12-5
8x=17
x=17/8

(x+3)=(x+4)
x²+4x+3x+12
x²+7x+12