What should be added to get –9 by 8 so as to get 12 by 16

Let the number should be x

-9/8+x=12/16

-9+8x/8=12/16

-9/8x=12/16*8

8x=6+9

x=15/8

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.

maya’s expression will generate the wrong sum because she violated the commutative property.

step-by-step explanation: