What fraction altogether is 5/12 and 4/12

9/12

Step-by-step explanation:

5      4       9

_      _  =   _

12    12     12

When both denominators are the same keep it. Then add the top no matter what. if it says 6+3 add that then you would get 9

                                                                                _

                                                                               12

So here you go the answer is 9/12

b.my answer is b.

brainliest

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.