Question

subtract 9(21-6m+3n) from 31(20n-2m+31)




please answer ​

Answer 1

This Question's answer is 125

Answer 2

Step-by-step explanation:

31(20n-2m+31)

= 620n - 62m + 961

9(21-6m+3n)

= 189 - 54m + 27n

= 27n - 54m + 189

(620n - 62m + 961) - (27n - 54m + 189)

= 620n - 62m + 961 - 27n + 54m -189

= 596n - 8m + 772