Subtract. Your answer should be a polynomial in standard form.
(-7d^3-5d^3f^3-3f^3) - (8d^3+4d^3f^3+2f^3)

−93 3−153−53

Step-by-step explanation:

wrong answer but the answer is on google

hello i am doing good for you that it's summer in your country or state ; )

btw in my country we just have sun and rain as (because i live in the caribbean lol)

also, thx a lot for the points : )

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9