2x - 5x = -6
-3x = -6
3x = 6
x = 6/3
x = 2
By Mohammed Arafat
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if: 2x + 6 = -6 then: 2x = -12 x = -6 if: 5x + 7y = 1 then: 5(-6) + 7y = 1 7y = 31 y = 31/7
2X + 5Y = 6 5Y = - 2X + 6 Y = - 2/5X + 6/5 ----------------------------------and 5X - 2Y = 8 2Y = - 5X + 8 Y = - 5/2 + 4 ------------------- Look like intersecting lines, though not perpendicular
x=6 y=30
5x - 2x = -5 - 1 ie 3x = -6 so x = -2
5x+6-2x=-5-x 3x+6=-5-x 4x=-11 x=11/-4