Question

alguem me ajuda com essas equaçoes

3x+4 = 16

2x-3 = x+1

3(x+4) = 2(x-2)

4(2x+1) = 3(x-2)

Answer 1

3x+4=16
3x= -4+16
3x= 12
x= 12/3
x=4

2x-3=x+1
2x-x=3+1
x=4

3(x+4) = 2(x-2)
3x+12=2x-4 
3x - 2x = -12-4
x=-16

4(2x+1)=3(x-2)
8x+8=3x-6
8x-3x=-8-6
5x=-14
x=-14/5
x= -2,80