Question

7 x + 11x = 18x
3m + 8m + 11m =
4mn + 5mn =
5a + 3,5a =
8ab + 5ab + 2ab =
9xy + xy + 5xy =

Answer 1

Explicação passo-a-passo:

3m+8m+11m=21m

4mn+5mn=9mn

5a+3,5a=8,5a

8ab+5ab+2ab=15ab

9xy+xy+5xy=9x²y²