Question

2)Determine o resultado das adições

algébricas

A) 10k-9K-(12K+3K-10K

b)12x+ 23x +-13X –x =

c) 2x-3x+5x -8x=
d)10ab-5+ab-7ab​

Answer 1

Resposta:

A) 10k-9K-(12K+3K-10K

$10k - 9k - 12k - 3k + 10k \\ k - 15k + 10k \\ - 14k + 10k \\ = - 4k$

b)12x+ 23x +-13X –x =

$12x + 23x - 13x - x \\ 35x - 14x \\ = 21x$

c) 2x-3x+5x -8x=

$2x - 3x + 5x - 8x \\ - x - 3x \\ = - 4x$

d)10ab-5+ab-7ab

$5ab - 7ab \\ = - 2ab$