Question

resolva as equaçoes

A) 5X+3X=16

B)X+X+8=54

C)7X-2-5X=18

D)12X-10X-4=3

E)-X-2X-4=11

F)8X=5X+4,5

Answer 1

a) 8x=16
x= 16/8
x=2

b) 2x+8=54
2x= 54-8
2x= 46
x= 46/2
x= 23

c) -2+2x= 18
2x= 18+2
2x= 20
x= 20/2
x= 10

d) 2x-4= 3
2x= 3+4
2x= 7
x= 7/2= 3,5

e) -3x-4= 11
-3x= 11+4
-3x= 15
x= 15/-3
x= -5

f) 8x-5x= 4,5
3x= 4,5
3x= $\frac{9}{2}$
x= $\frac{9}{2} . \frac{1}{3} = \frac{3}{2}$= 1,5.

espero ter ajudado :)