Solve the system by either the substitution or the elimination method. $$ \left\{\begin{array}{l} {5 a-7 b=6} \\ {7 a-6 b=8} \end{array}\right. $$
Added by Frank V.
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Elimination method: We can eliminate one of the variables by multiplying one of the equations by a constant and adding or subtracting the two equations. Let's eliminate b by multiplying the first equation by 6 and the second equation by 7, then subtracting the two Show more…
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