Math, asked by abhishekmahato3171, 1 year ago

find the value of determinant [m/-5 2/7] is 31 , find value of 'm'

Answers

Answered by abhilash3600

27

7m + 10 = 31
7m = 21
m = 3

Answered by vaishaligadge700

13

Answer:

m×7-(-5)×2=31

7m-(-10)=31

7m+10=31

7m=31-10

7m=21

m=21÷7

m=3

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