The answer is 23 because you would substitute in the 4 for the X and multiply 5 times 4 = 20 then add 20 plus 3 and you get 23
Answer:
It would be -81²x+81x-18= -9x+6
Step-by-step explanation:
When you work equation one you get 18. Then when you work equation two, you get -2/3=-0.666666667
Answer:

Step-by-step explanation:
The given expression is
.
This expression is the same as;
.
Or
.
We regroup the terms to obtain;

We simplify to get

Answer:
(2,2)
Step-by-step explanation:
-3 + 5 = 2
4 - 2 = 2