Question

a) 3x + 5 = 5x − 13
b) 5(7 − x) = 31− x
c) 4(2 − 3x) = −2x − 27
d) 6x − 8 = 4(−2x + 5)
e) 3(2x − 2) = 2(3x + 9)
f) 3(4x + 7) = 4x − 25
g) 7x + 15 = 3(3x − 7)

Answer 1

a) 3x-5x=-13-5x
-2x/-2= -13/-2
x= 13/2

b) 5x7-5x = 35-5
35-5x-35=31-x-35
-5x=-x-4
-5x + x= -x-4+x
-4x/-4 + -4/-4
X= 1

c) 8-12x-8= -2x - 27 -8
-12x= -2x-27-8
-10x= -35
-10x/-10= -35/-10
X= 7/2

d) 4(-2x + 5)= -6x8
4(-2x +5)/4 = -48/4
-2x + 5 - 5= -12
-2x/-2 = -17/-2
x= 17/2

e) 3(2x -2)= 2 x 12
3(2x -2)/3 = 24/3
2x - 2 + 2= 8 + 2
2x/2 = 10/2
x= 5

f) 12x + 21 - 21 = 4x - 25 - 21
12x = 4x - 25 - 21
12x = 4x - 46
8x = -46
8x/8 = -46/8
x= -23/-4

g) 7x + 15 = 9x - 21 - 15
7x = 9x -36
-2x = 36
-2x/-2 = -36/-2
x= 18