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Can someone tell me the formula i would use for this and how to solve through?

Can someone tell me the formula i would use for this and how to solve through?
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1 vote
Can someone tell me the formula i would use for this and how to solve through?

Can someone tell me the formula i would use for this and how to solve through?-example-1
User Rodolphe LAMPE
by
8.2k points

1 Answer

3 votes
since they are congruent, cpctc,
just set the congruent parts equal to each other.
so 2x-20=30
and
15=3y-9
User ArielBH
by
9.3k points
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