Question

resolva as equaçoes

a) 2x-2= 4x-10
b) 2x+10+8x= 50
c) 8x-10-2x= 6x+20
d) 4x-4= 20

Answer 1

a) 2x-2=4x-10
2x-4x=2-10
-2x= -8
x= -2/-8
x= +4

b)2x+10+8x=50
2x+8x=-10+50
10x=-40
x= 10/-40
x= -4

c) 8x-10-2x=6x+20
8x-2x-6x=10+20
x=30

d) 4x-4=20
4x=4+20
4x= 24
x= 4/24
x= 6

Answer 2

2X-4X= -10+2
-2X= -8
X= -8/2= -4

2X+8X= 50-10
10X= 40
X= 40/10= 4

8X-2X-6X= 20-10
X= 10

4X= 20-4
4X= 16
X= 16/4= 4