Add the equations: 8x - y = 8 ie 8x - 8 = y so 5x - 5(8x - 8) = -30
which is 5x - 40x + 40 = -30 ie -35x = -70 making x = 2 and y = 8.
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Simultaneous equations.
-2
Ten. That means 3x equals 30, and 30 divided by three is ten.
3x + 6 = 30 Therefore, 3x = 24 x = 24/3 x = 8
-3x + 40 = 38 Subtract 40 from both sides: -3x = -2 Multiply both sides by -1: 3x = 2 Divide both sides by 3: x = 2/3