Question

d) 8(x+3)=40
e) 12x-14(1-x)-2(10x+4)=0
f) 10(2x -1)=4(x+4)
preciso disso agora e com conta!!

Answer 1

d)  8(x+3)=40

x+3=5

x=5-3

x=2

e) 12x-14(1-x)-2(10x+4)=0

12x-14+14x-20x-8=0

6x-22=0

6x=22

x= 11/3

f)  10(2x -1)=4(x+4)

20x-10=4x+16

20x-4x=16+10

16x=26

x= 13/8