Question

Calcule as equações abaixo
A) 5 .(2x - 4) +3 . (3x+5) =10
B) 2 . (7X+5) +2 . (3X+10)=50
C) 6 . (5X +2)=8 . (4X +2)

Answer 1

Resposta:

A) 10x-20+9x+15=10

10x+9x-20+15-10=0

19x -15=0

19x= 15

x= 15/19

B)14X+10+6X+20=50

20X+30=50

20X= 50-30

20X=20

X=20/20

X=1

C)30x+12=32x+16

30x-32x=16-12

-2x=4

x=4/-2

x= -2