Question

ajuda ai pessoal , ajudando meu colega aqui

Answer 1

9) a) 4a / 5x + 3a / 5x =
7a / 5x

b) 2 / 2x + 1 / 3x =
6 / 6x + 2 / 6x =
8 / 6x = 4x / 3

10) 7a / m*m * 5m / 2a (cancela " m ' com "m' e 'a ' com " a' fica:
35 / 2am

b). a + b / 7 * a+ b / ab
( a+ b)2. / 7ab

c) x + y. / x- y. * x + y / x + y =
x + y / x - y

d) ( x + y) * ( x - y ) (x +1)
--------------------------- X. ----------
5 ( x + 1 ) 5x - 1

( x- 1) *( x + 1)
---------------------------
25x - 5