Solve the System using elimination. 5x-2y=15 7x+7y=-28

Mathematics

1 answer:

steposvetlana [31]2 years ago

8 0

Answer:

x=1 y=-5

Step-by-step explanation:

7(5x-2y=15) ---> 35x-14y=105

2(7x+7y=-28) --> + 14x+14y=-56

49x=49 --->x=1

5(1)-2y=15 ---> 5-2y=15 ---> -2y=10 ---> y=-5

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