3 math questions, help please. 10 POINTS♥

1) 2/5x+1/9
a) 1/15x
b) 3+x/9x
c) 3+x/45x
d) 18+5x/45x

2) 2/3x+4 + 6/x+2
a) 4/2x+3
b) 8/4x+6
c) 4(5x+7)/(3x+4)(x+2)
d) 20x+7/3x^2+4x+8

3) 8 + x-4/x+3
a) 8x-32/x+3
b) 9x+20/x+3
c) 8(x-4)/(8x+3)
d) 8x-12/(x-4)(x+3)


THANK YOU ! < 3

1) 2/5x+1/9
18/45x + 5x/45x
= d) 18+5x/45x

2) 2/3x+4 + 6/x+2
(2x+4)/[(3x+4)(x+2)] + (18x+24)/[(3x+4)(x+2)]
(2x+4+18x+24)/[(3x+4)(x+2)]
(20x+28)/[(3x+4)(x+2)]
= c) 4(5x+7)/(3x+4)(x+2)

3) 8 + x-4/x+3
(8x+24)/(x+3) + (x-4)/(x+3)
(8x+24+x-4)/(x+3)
= b) 9x+20/x+3

1. D
2. C
3. B

the key is in demominator. I know You can do it!

1 =d
2=c
3=b