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5x + 2 = x + 10
4x = 8
x = 2
b)
1 + 3x = 2x + 7
x = 6
c)
2 + 7x = 7 - 3x
10x = 5
x= 1/2
d)
x - 18 = 2x - 3
-15 = x
e)
-5 - 2x = 3 - 8x - 2
-8 + 2= 10x
-6 = 10x
-3/5 = x
5x - x = 10 - 2
4x = 8
x = 8/4
x = 2
--------------------------------
1 + 3x = 2x + 7
3x - 2x = 7 - 1
x = 6
-------------------------------
2 + 7x = 4 - 3x
7x + 3x = 4 - 2
10x = 2
x = 2/10
x = 1/5
------------------------------------
x - 18 = 2x - 3
x - 2x = - 3 + 18
- x = 15
x = - 15
----------------------------------
- 5 - 2x = 3 - 8x - 2
- 2x + 8x = 3 - 2 + 5
-6x = 6
x = 6/6
x = 1