Question

a) 4y-2y-18= 0
b)2x+1=5X+20
C)x-3=2X+12

Answer 1

a) 4y -2y-18 = 0
2y - 18 = 0
2y = 18
y = 9

b) 2x + 1 = 5x + 20
2x = 5x + 20 - 1
2x = 5x + 19
0 = 5x - 2x + 19
- 19 = 3x
x = -19/3

c) x - 3 = 2x + 12
x = 2x + 12 + 3
x = 2x + 15
x - 2x = 15
- x = 15
x = - 15

Answer 2

a) 2y-18=0
y= 18/2
y= 9

b) 2x+1= 5x+20
2x-5x = 20-1
-3x= 19
x= -19/3

c) x-2x =12+3
-x= 15
x= -15