amy is shopping for a new couch. she finds one that she likes for $800, but her budget is $640. how much for a discount does she
1 answer:
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Answer:
Step-by-step explanation:
This system of equations is convenient, because the second equation already expresses y in terms of x. Now, you can substitute that in.
Multiplying both sides by -1 and bringing the 5 over:
Combining like terms and factoring out 5:
Factoring:
Solutions:
Hope this helps!