Question

Calcule:
a) (13d +8x) - (-7d – 6x) =
b)(15x -5y +6z) + (- 9x +14y – z) =
c) ( -9a -ax +8x) + ( 5a – 2ax + x ) =
d) ( -3n +3a- 2s) - ( -6n +8a- s) =

Answer 1

Resposta:

$a) 13d + 8x + 7d + 6x // 20d + 14x\\b) 15x - 5y + 6z - 9x + 14y -z// 6x + 9y + 5z\\c) -9a - ax + 8x + 5a - 2ax + x // -4a - 3ax + 9x\\d) -3n + 3a - 2s + 6n -8a + s// 3n - 5a - s$