<span>Simplifying
graph + -1x + -9y = 8
Solving
aghpr + -1x + -9y = 8
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add 'x' to each side of the equation.</span>
Step-by-step explanation:
-7/2 = -28
-7 = -28 × 2
-7 = -56
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