Question

j) y +9 +5y = 3 +2y +7
a) 5x -7 = 3x +15
b) 2x -5 = 2 -6x
c) 2x -3 = 7x -28
d) 6x -18 -9x +45 = x -1
e) 8x -2x = 12 -x
f) 3x -6 +2x = 9
g) -2 -3x = x +6
h) 3x +3 = 2x +6

Answer 1

y + 9 + 5y = 3 + 2y + 7

y + 5y - 2y = 7 + 3 - 9

y + 3y = 10 - 9

4y = 1

y = 1/4

5x - 7 = 3x + 15

5x - 3x = 15 + 7

2x = 22

x = 22/2

x = 11

2x - 5 = 2 - 6x

2x + 6x = 2 + 5

8x = 7

x = 7/8

2x - 3 = 7x - 28

2x - 7x = -28 + 3

-5x = -25

x = -25/-5

x = 5

6x - 18 - 9x + 45 = x - 1

6x - 9x - x = -1 + 18 - 45

6x - 10x = 17 - 45

-4x = 28

x = 28/-4

x = -7

8x - 2x = 12 - x

8x - 2x + x = 12

6x + x = 12

7x = 12

x = 12/7

3x - 6 + 2x = 9

3x + 2x = 9 + 6

5x = 15

x = 15/5

x = 3

-2 - 3x = x + 6

-3x - x = 6 + 2

-4x = 8

x = 8/-4

x = -2

3x + 3 = 2x + 6

3x - 2x = 6 - 3

x = 3