2-1 reversed is turning it around : 1-2 which equals -1 because there is one left over. B is your answer and hoped I helped!
2 times, you can fold it without no overlapping on any line
X=15
EXPLANATION:
5x+4+5x+11+x=180
11x+15=180
-15 -15
11x=165
— ——
11 11
x=15
Answer:
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Step-by-step explanation: