I’ve tried to work it out but my answer is wrong.

-5

Step-by-step explanation:

You can only combine variables with like terms. Variables with like terms are so 7/9 - 6/9 is 1/9 and 1/9 - 5/9 is -4/9. The other variables with like terms are 2 and (-7). 2 - 7 = -5. Now combining these two together we get the fraction -4/9 -5

(c, 0) i might be wrong so don't put full faith on my answer

d

step-by-step explanation:

d