Please just give me the answers to the following, I'm desperate.

7/3a + 2/5

Find the LCD of the pair of expressions
4/10x^4y^3 , 4/6x^2y^4

x/x^2-16 - 4/x^2-16

-6x/x-6 - 9/x-6

9/m+2 + 8/m-7

3/b-3 - b/b-3

-6x/x+7 - 7/x+7

6x-1/x^2-25 - 7x-6/x^2-25

x/x^2-4 - 2/x^2-4

-5x/x-9 - -8/x-9

Question

Please just give me the answers to the following, I'm desperate.

7/3a + 2/5

Find the LCD of the pair of expressions
4/10x^4y^3 , 4/6x^2y^4

x/x^2-16  -  4/x^2-16

-6x/x-6  -  9/x-6

9/m+2  +  8/m-7

3/b-3  -  b/b-3

-6x/x+7  -  7/x+7

6x-1/x^2-25  -  7x-6/x^2-25

x/x^2-4  -  2/x^2-4

-5x/x-9  -  -8/x-9

anonymous · Answer

I the top one simplifying or factoring?

anonymous · Answer

*Is

anonymous · Answer

And, I recommend mathway.com

anonymous · Answer

what is all this?  are there instructions?