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tresset_1 [31]
3 years ago
11

Solve : Show all world

Mathematics
1 answer:
dem82 [27]3 years ago
5 0

Answer:

Step-by-step explanation:

3y+21+hy+20 = 90

the sum of two complimentary angles = 90

m+n=90

then solve for y ( i think it is not letter H it has to be a number).

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CHECK
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