{2x^{2}+9(2y+1)-4y(3x^{2}+8)}2x2+9(2y+1)−4y(3x2+8)
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If only we could get rid of one of the variables. ... by 3}} \end{aligned} 3x−4y3x−4(2)3x−83xx=1=1=1 =9=3Equation 2Substitute 2 for yAdd 8 ... Systems of equations with substitution: -3x-4y=-2 & y=2x-5.
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