explain step by step
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5
Answer:
step1
step2
step3
step4
step5
answer is X
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45
AB is a straight line = 180°
so..
x+10+4x+25+x+5=180
x+4x+x+10+25+5=180
6x+40=180
6x=180-40
6x=140
x=140/6
x=23.3
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