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3 years ago

Need some help on the lower question. Thanks

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

3 0

180 = 60 + (180-a) + (180-b)

120 = 180 - a + 180 - b

-240 = -a - b

b - 240 = -a

b = 240 - a

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