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5x + 4 = 10x - 5 10x - 5x = 4 + 5 5x = 9 x = 1.8
10x+7 = 5x+32 10x-5x = 32-7 5x = 25 x = 5
If: 10x+7 = 5x+22 Then: 10x-5x = 22-7 And: 5x = 15 So: x = 3
30 + 5x = 15 + 10x 30 = 15 + 5x 15 = 5x x = 3
10x - 18 = 5x + 2 Add -5x + 18 to both sides of the equation, to get: 5x = 20, from which x = 4.