Section+7.4+-+Using+Multiplication+with+Elimination

Multiply both equations to get one of the variable's coefficients' Least Common Multiple! (Same idea as a least common denominator)
 * To use elimination, you want the coefficients of one variable to be opposite*

3x+5y=76 4x-3y=-5
 * Ex**. Solve

4(3x+5y=76)->12x+20y=304 -3(4x-3y=-5)-->-12x+9y=15 ^^ you must have one negative so it can cancel out...for example, the 12.
 * Least Common Multiple:**

29y=319 divide by 29 on both sides y=11

plug the 11 into the y in the easier equation. 3x+5(11)=76 3x+55=76 subtract 55 on both sides 3x=21

divide by 3 on both sides x=7


 * FINAL ANSWER - (7, 11)**

-Jaryn Pitkowsky