Question

Gente me ajudem fazem os cálculos e pra mim entra amanhã

Answer 1

a)5x+3x=16
8x=16
x=16/8
x=2
b)x+x+8=54
2x=54-8
2x=46
x=46/2
x=23
c)7x-2-5x=18
2x=18+2
2x=20
x=20/2
x=10
d)12x-10x-4=3
2x=3+4
2x=7
x=7/2
x=3,5
e)-x-2x-4=11
-3x=11+4
-3x=15 *(-1)
3x=-15
x=-15/3
x=-5
f)8x=5x+4,5
8x-5x=4,5
3x=4,5
x=4,5/3
x=1,5