$15
hope this helps u
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15+5=2y-5+5
=20 = 2y
20/2 = 2y/2
10 = y
Finding perimeter is simple. All you do is add up all of the side lengths, and bada bing bada boom, you got the perimeter.
Answer:300cm
Step-by-step explanation:
Answer:
y=3x+1
