Question

solve the system by using elimination or elimination with multiplication.One point for steps and solution.
x-y=3 and x+y=7

Answer 1

Subtract the first equation from the second.

\[x+y=7\]-\[x-y=3\]\[=2y=4\]Divide by 2
\[y=2\]Plug back 2 in for y into either equation.
\[x-2=3\]\[x=5\]

x=5, y=2

Answer 2

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