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5x - 18 = 4x + 7Add 18 to each side:5x = 4x + 25Subtract 4x from each side:x = 25
Given: 5X - 18 = 4X + 4; subtracting 4X from each side: X - 18 = 4; adding 18 to each side, X = 22
x= -11
4x - 10 + 5x = 719x = 81x = 9
6 + x - 10x = 11 - 4x 6 - 9x = 11 - 4x add 9x to both sides: 6 = 11 + 5x subtract 11 from both sides: -5 = 5x divide both sides by 5: -1 = x