3 years ago

10x + 9y=-15 -10x – 10y = 10 Solve by the elimination

Mathematics

1 answer:

jonny [76]3 years ago

8 0

Answer:

-y = 25

y = -25

When the signs are different you add, the value for x is the same so you don't need to do anythung else but to add

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Luba_88 [7]

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