Question

Determine o valor de x nas expressões abaixo

A)3X-7=14. E)X+4=-3X+2


B)6X-2=28+X. F)3x+10=31

C)5X+9=99. G)4X+3=27

D)6X-3X+5=25

Answer 1

A)3x-7=14
3x=14+7
3x=21
x=21/3
x=7

B)6x-2=28+x
6x-x=28+2
5x=30
x=30/5
x=6

C)5x+9=99
5x=99-9
5x=90
x=90/5
x=18

D)6x-3x+5=25
3x=25-5
3x=20
x=20/3
x=6,666.....

E)x+4=-3x+2
x+3x=2-4
4x=-2
x=-2/4
x=-0,5

F)3x+10=31
3x=31-10
3x=21
x=21/3
x=7

G)4x+3=27
4x=27-3
4x=24
x=24/4
x=6