3 years ago

Please help me with this

Mathematics

1 answer:

leonid [27]3 years ago

5 0

Step-by-step explanation:

-4 = x - y ...1

4 = -x + y ...2

...1 + ...2

-4+4 = x-y +(-x+y)

0 = 0

and I don't know next lol

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