x + 8 =15
11 + x = 32
x + 6 = 2x
2x + 1 = 13
20x + 5x = 1225
5 - x = 7- 2x
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x+8 = 15
x = 15-8 ---> x = 7
11+x = 32
x = 32-11 ----> x = 21
x+6 = 2x
6 = 2x-x ----> x = 6
2x+1 = 13
2x = 13-1
2x = 12 ----> x = 6
20x + 5x = 1225
25x = 1225
x= 49
5-x = 7-2x
-x+2x = 7-5
x = 2 .
x = 15-8 ---> x = 7
11+x = 32
x = 32-11 ----> x = 21
x+6 = 2x
6 = 2x-x ----> x = 6
2x+1 = 13
2x = 13-1
2x = 12 ----> x = 6
20x + 5x = 1225
25x = 1225
x= 49
5-x = 7-2x
-x+2x = 7-5
x = 2 .
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