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scoray [572]
3 years ago
10

Find the perimeter of the triangle or rectangle. The sides of each triangle are equal in length. Could you help with 16 and 18?

Mathematics
1 answer:
Whitepunk [10]3 years ago
8 0
16. 9

Since each side are congruent, you set the two sides to each other

7x-12=3x

Subtract 7x from both sides

-12=-4x

Divide -4 from both sides

3=x

3+3+3=9

18. 28

2x-3=3x-10

Add 10 on both sides

2x+7=3x

Subtract 2x on both sides

7=x

7+7+7+7=28
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