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-7 +2x = x + 8 2x - x = 7 + 8 x = 15
are you talking about a system of equations where x+3y=-7 -x+2y=-8 if so, then the answer is {2,-3}
If you mean: y^2 + x^2 = 65 and y + x = 7 then the solutions are as follows:- When y = -1 then x = 8 When y = 8 then x = -1
23/8 There are 16 eighths in 2 (2 x 8) plus 7 = 23
This is an unclear equation, actually some sort of addition. (Opposite means negative? Inverse?) 2x + x + (-x) + (-1) = 7 + 2 (-x) ?? 2x - 1 = 7 - 2x 4x = 8 x = 2