Question

Subtract the sum of 6mn - 3m - 12n from the sum of -13mn - 2m -3n and 11m - 18 - 20mn.​

Answer 1

Step-by-step explanation:

11m-18-20mn + (13mn-2m-3n)

11m-18-20mn+13mn-2m-3n

9m-7mn-3n-18

9m-7mn-3n-18 -6mn+3m+12n

12m-13mn+9n-18

Hope this would help you

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