Question

a)(+3xy)-(-xy)+(xy)=
b) (+ 15x)-(-3x)-(+7x)+(-2x)=
c) (-9y-(+3y)-(+y)+(-2y)=
d) (3n)+(-8n)+(+4n)-(-5n)-(-n)=

Answer 1

a)(+3xy)-(-xy)+(xy) = 3xy+xy+xy = 5xy

b) (+ 15x)-(-3x)-(+7x)+(-2x) = 15x+3x-7x-2x = 9x

c) (-9y-(+3y)-(+y)+(-2y) = -9y-3y-y-2y = -15y

d) (3n)+(-8n)+(+4n)-(-5n)-(-n) = 3n-8n+4n+5n+n = +5n

❤️ Boa noite ❤️

18/11/21