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Earn +20 ptsQ: X plus 3x plus 3 equals X plus 18?
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3x - 8y equals -18 2x plus 5y equals 19?
(2, 3)
Y equals 5x plus 18 y equals 2x plus 9?
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3
What is the answer for x2 plus 3x-18 equals 0?
X2 + 3X - 18 = 0What two factors of - 18 add up to 3 ??(X - 3)(X + 6)============so, by the zero sum rule,X = 3X = - 6
What is the solution to 3x-3 equals -3x plus -3?
x = 0
What is 3x plus 7y if x equals 6 y equals 4?
3x + 7y = 3*x + 7*y = 3*6 + 7*4 = 18 + 28 = 46
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