Multiply the second equation by -3, then add the equations together.(9x−3y=3)−3(3x+8y=−17)Becomes:9x−3y=3−9x−24y=51Add these equations to eliminate x:−27y=54Then solve−27y=54for y:−27y−27=54−27(Divide both sides by -27)y=−2Now that we've found y let's plug it back in to solve for x.Write down an original equation:9x−3y=3Substitute−2foryin9x−3y=3:9x−(3)(−2)=39x+6=3(Simplify both sides of the equation)9x+6+−6=3+−6(Add -6 to both sides)9x=−39x9=−39(Divide both sides by 9)x=−13Answer:x=−13 and y=−2
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