Question

2x – x + 5 + 4 – 2x = 16 – 15x

b) 3x – 2x + 10 = – 10 – 5x + 80    

c) x + 12 = 52

d) 6x + 12 – 4x = 123 – 8x – 31

e) 10x – 16 = x – 14x + 7

f) 5x + 5 + 6x + 12 = 9x + 27

 

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Answer 1

2x -x + 5 +4 - 2x = 16-15x

-x+15x = -5 -4 +16

14x = -9 + 16

14x = 7

x = 7/14

x = 0,5

3x - 2x +10 = -10 +5x + 80

x +10 = -10 +5x + 80

x -5x = -10 -10 +80

4x = -20 +80

4x = 60

x = 60/4

x= 15

x+12=52

x = 52 -12

x= 40

6x + 12 - 4x = 123- 8x -31

2x + 12 = 123 - 8x -31

2x + 8x = -12 +123 -31

10x = 80

x = 80/10

x = 8

10x - 16 =x - 14x + 7

10x -x +14x = 16 +7

23x = 23

x = 23/23

x = 1

5x + 5 + 6x +12 =9x +27

5x + 6x - 9x = -5 -12 +27

2x = 10

x = 10/2

x = 5