Question

alguien que me ayude porfa


● 5x+3y-4x-12+5
● 8m+2mn-2n-2mn+5n-8m+4n+7
● 3a²- 2a+12a²-3a-15a²​

Answer 1

● 5x+3y-4x-12+5= x+3y-7

● 8m+2mn-2n-2mn+5n-8m+4n+7=7n+7

● 3a²- 2a+12a²-3a-15a²=​-5a