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Solve Each System by Using Either the Substitution or the Elimination-By-Addition

Question 341

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Solve each system by using either the substitution or the elimination-by-addition method, whichever seems more appropriate. (−4(x+2)+7(y−5)=−655(x+6)−7(y+4)=19)\left( \begin{array} { c } - 4 ( x + 2 ) + 7 ( y - 5 ) = - 65 \\5 ( x + 6 ) - 7 ( y + 4 ) = 19\end{array} \right)

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