(1, -1)
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It is: 7x+10y
7x+17 = 45 7x = 45-17 7x = 28 x = 4
x = 0 and y = 4
(7x-3y) + (2x+5y) = 9x+2y
3x + 17 + 5x = 7x + 10Combine (add) the 'x'-terms on the left side of the equation:8x + 17 = 7x + 10Subtract 17 from each side:8x = 7x - 7Subtract 7x from each side:x = -7