Question

-2n-n-8+1
x2-x-5-x2
5x-y-x-x-y
2x+2x+y-3x-y+9x
5a-5a-5a-5a-m-m-m
5xy-2xy+5x+3y-xy+x+3xy
-2-2y+y-3x+5xy+6-x-y+8

Answer 1

o sapirico habita nessa pergunta..

Answer 2

DEVE SE LEMBRAR QUE SO SUBTRAI E SOMA OS IGUAIS
-2n-n-8+1 = -3N
-7x2-x-5-x2 = -X -5
5x-y-x-x-y = 3X -2Y
2x+2x+y-3x-y+9x =  8X
5a-5a-5a-5a-m-m-m = -10a -3m
5xy-2xy+5x+3y-xy+x+3xy= 5xy +3y + x
-2-2y+y-3x+5xy+6-x-y+8 = 5xy -4x-2y + 12