8x+1y+-15 if you are combining variables.
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if you mean 5x -2y = 10 then y = 2.5x -5
5x-2 = 3x-6 5x = 3x - 6 +2 5x = 3x - 4 5x - 3x = -4 2x = -4 x = -2
5x - 4y ≥ -203x - 2y ≤ -8y ≥ -3
There is NO solution, because there is NO equals sign. However, 5x + 3x add to 8x (simplified) Remember in Algebra 5x means '5' multiplied to 'x' and '3' multiplied to 'x'. The multiplication sign is never shown in algebra.
3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8