Resposta :
a)
3x+17=50
3x=50-17
x=33:3
x=11
b)
2x+19=43-4x
2x+4x=43-19
6x=24
x=24:6
x=4
c)
6(x+8)=4(x+3)
6x+48=4x+12
6x-4x=12-48
2x=-36
x=-36:2
x=-18
d)
2(7x-9)=5(2x+6)
14x-18=10x+30
14x-10x=30+18
4x=48
x=48:4
x=12
3x+17=50
3x=50-17
x=33:3
x=11
b)
2x+19=43-4x
2x+4x=43-19
6x=24
x=24:6
x=4
c)
6(x+8)=4(x+3)
6x+48=4x+12
6x-4x=12-48
2x=-36
x=-36:2
x=-18
d)
2(7x-9)=5(2x+6)
14x-18=10x+30
14x-10x=30+18
4x=48
x=48:4
x=12