Question
Solve each system of equations. If the system has no solution, say that it is inconsistent.$$\left\{\begin{array}{l}x+y=8 \\x-y=4\end{array}\right.$$
Step 1
Step 1: Add the two equations together to eliminate the variable $y$: $$x+y+(x-y)=8+4$$ This simplifies to: $$2x=12$$ Show more…
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