add the following algebraic expressions
3m-20n , 12m-7n , -8m+12n
show the sum also
Answers
Answered by
15
Step-by-step explanation:
(3m-20n)+(12m-7n)+(-8m+12n)
(3m+12m-8m)+(-20n-7n+12n)
(15m-8m)+(-27n+12n)
7m-15n
Answered by
0
Answer:
ans is corrcect that child has give pls mark him branliest and the ans is 7m- 15n thankyou
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