Question

resolva as equações (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) 5x+3x=16
8x=16
x=2

B) x+x+8=54
2x=46
x=23

C) 7x-2-5x=18
2x=20
x=10

D) 12x-10x-4=3
2x=7
x=7/2 ou 3,5

E)-x-2x-4=11
-3x=15
x=-5

F) 8x=5x+4,5
3x=4,5
x=1,5