Question

Resolva as expressões
(+7x)+(-3x)
(-8x)+(+11x)
(-2m)+(-m)
(+5x)+(-4n)
(-6n)+(+n)
(+8x)-(-3x)

Answer 1

Resposta:

(+7x) + (-3x) = (R: 4x)

(-8x) + (+11x) = (R: 3x )

(-2m) + (-m) = (R: -3m)

(-6n) + (+n) = (R: -4n)

(+8x) – ( -3x) = (R: 11x)