Answer: 456
Step-by-step explanation:
idk if this is right i dont have anouf to be 100% sure but thats about right sorry if its not, i would try and put more info in next time to get a closer answer
5-x÷3=-7
Add 3 to both sides of the equation.
5x=3+7
Divide each term by 5 and simplify.
Divide each term in 5x=10 by 5
5x/5=10/5
Reduce the expression by cancelling the common factors.
x= 10/5
Divide 10 by 5
Answer <em>x </em>=2
Answer:

<h3><u>u=0</u> is the right answer.</h3>
Find <em>n</em> :
P = a + b + c
63 = n + (4n - 8) + (2n + 8)
63 = (n + 4n + 2n) + (-8 + 8)
63 = 7n
n = 63 ÷ 7
n = 9
Sides :
1.) n = <u>9</u>
2.) 4n - 8 = 4(9) - 8 = 36 - 8 = <u>2</u><u>8</u>
3.) 2n + 8 = 2(9) + 8 = 18 + 8 = <u>2</u><u>6</u>
<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>