Question

RESOLVA AS SEGUNTES EQUAÇOES:

a) -X-8=10

b) 4(-5X+6)=18

c) -(2X+6)=4

d) 2X-8=21

Answer 1

a) -X-8=10 
-x=10+8
-x=18
x=-18

b) 4(-5X+6)=18
-20x+24=18
-20x=-6
x=6/20
x=3/10

c) -(2X+6)=4
-2x-6=4
-2x=4+6
-2x=10
-x=10/2
-x=5
x=-5

d) 2X-8=21
 2x=21+8
2x=29
x=29/2