help me about this question
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Step-by-step explanation:
given in figure EBF is a straight line meaning that it makes an angle of 180
therefore angleEBD+angleDBC+agleCBF=180
therefore means x+3+x+20+x+7=180
3x+30=180
3x=180-30
3x=150
x=150/3
x=50
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