Question
Verify that each system of equations has the indicated solution.$\left\{\begin{aligned} x-y &=5 \\-2 x+2 y &=-10 \end{aligned}\right.$Solution: $x=a, y=a-5$ (for every real number $a$ )
Step 1
This gives us the following system: $$\left\{\begin{array}{r} a-(a-5)=5 \\ -2 a+2(a-5)=-10 \end{array}\right.$$ Show more…
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