Well, first you'd have to get the x by it's self.
10x+1=3x+9
Subtract 3x from each side and you'll have the x on only one side rather than two.
7x+1=9
Now I'd get rid of the 1 on the x's side. So just subtract 1 from each side.
7x=8
Then you should make it so the seven isn't there with the x either. Just divide each side by 7.
Answer: x=8/7
Each time you change something on one side, you must do the same to the other side. T find the value of a variable in an equation, simple seclude it so it's on it's own without number to make things confusing.
The answer was x=8/7 btw.
Your distance(d) is 1,814.4
1814.4 m = 5.6t square
then you square root 5.6t

the square root eliminates the square

you square root 1,814.4 m

(I rounded 42.6) then divide 42.6 by 5.6

(I rounded 7.6)
Your question is first one that’s your answer
Answer:
7.8 minutes
Step-by-step explanation:
70 x 30 = 2,100
2,100 divided by 270 = 7.8 minutes.
Combine like terms.
−7x2+x