x=6
y=30
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y = 2x + 5x - 12 = 7x - 12 So the zero is 12/7 = 1.7143 (approx)
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3
if: 2x + 6 = -6 then: 2x = -12 x = -6 if: 5x + 7y = 1 then: 5(-6) + 7y = 1 7y = 31 y = 31/7
Your answer is x = 1 & y = -2Given Equations:2x-y=4y=5x-7Using SubstitutionSubstitute y for 5x-7 to simplify the equation to only 1 variable.2x-(5x-7)=4Simplifya. 2x-5x+7=4b. -3x=-3c. x=1Solve for yPlug your x into the y equationy=5*(1)-7y=-2Check your answersPlug your variables into the multi-varible equation2*(1)-(-2) = 4
x = -2 and y = 1