3 years ago

Solve the system is equations and choose the correct answer from the list of options.

1 answer:

5 0

D+e=15
-d+e=-5
The ds cancel out so
e=15
e=-5
Add both sides of equations together
2e=10
Divide by 2
e=5

Substitute 5 for e in either equation:
d+5=15
Subtract 5
d=10

(10,5)

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