Answer:

As we know that , opposite angles of a parallelogram are equal,

So, 5x+1=49−3x

⟹8x=48

⟹x=6

Hence , measure of this angle =5.(6)+1=31

o

Measures of opposite angles of a parallelogram are (7x - 31)˚ and (5x + 13)˚. Then find the measure of ∠ B. 

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