19-11-2021
Mathematics

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plz help, what is the value of b?

plz help what is the value of b class=

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24nanjoshua 24nanjoshua

19-11-2021

By HS Postulate, Triangle EFC = Triangle EDC.

Angle FEC = Angle DEC by CPCTC

2b = b + 7 (subsitutional)

2b - b = b + 7 - b (subtract)

b = 7 (combining like terms)

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