Question

A)2×+4=6 ?
B)×+6=2×+9
C)2(×+1)=15
D)-4×+3=6(x+2)

Answer 1

a)2x+4=6
2x=6-4
2x=2
x=1

b)x+6=2x+9
x-2x=9-6
-x=3
x=-3

c)2(x+1)=15
2x+2=15
2x=15-2
2x=13
x=13/2

d)-4x+3=6(x+2)
-4x+3=6x+12
-4x-6x=12-3
10x=9
x=9/10

Answer 2

Olá.
a)
2x+4=6
2x= 6 - 4
2x=2
x=2/2
x=1

b)x+6=2x+9
x-2x = 9 - 6
-x = 3 (-1)
x = -3

c)2(x+1)=15
2x+2 = 15
3x = 15
x=15/3
x=5

d)-4x+3=6(x+2)
-4x+3=6x+12
-4x - 6x = 12 - 3
-10x = 9 (-1)
10x=9
x=9/10

Bons estudos