If both the hoses are on the same time then the height of the water in the pool is given by the expression 15g^2 + 5g - 6
Step-by-step explanation:
(7g^2 + 3g - 4) + (8g^2 + 2g - 2)
= (7g^2 + 8g^2) + ( 3g + 2g) + (-4 -2)
with the help of distribution law,
= (7 +8)g^2 + (3 + 2)g - (4 + 2)
= 15g^2 + 5g - 6
Therefore if both the hoses are on the same time then the height of the water in the pool is given by the expression 15g^2 + 5g - 6
Your question is not clear, if you are asking: what is

simplified? Then the answer is

or

.
If 63 is just the question number and you are asking, what is

simplified. Then the answer is

or

You get this answer by finding the highest number that both the numerator and denominator are divisible by, and diving both numbers by that:
Your answer is 29, hope I helped!!