Answer:
Factors of 20: 1, 2, 4, 5, 10, 20.
Step-by-step explanation:
Lets with be - x
then length - 2x
Perimeter= 2*x+2*2x=2x+4x=6x
P=54
6x=55,
x=9 width
2x=2*9=18 length
First set up the equation.
x + 3x = 648
Then solve for x.
4x = 648
Divide both sides by 4.
x = 162. So the answer for the system would be $162 and the price for the games would be $486. Add the two up to check your work and you will get $648. Hope this helped!
-TTL
Here's an example (which I'll walk you through):
2x + 5 = -1 - x
This has variables on both sides (because there's an x on the left side of the equals sign, and on the right side).
And the solution is also -3. Here's how:
2x + 5 = -1 - x
First, I'll move the x on the right side to the left by adding x to both sides:
2x + 5 + x = -1 - x + x
This cancels out the -x on the right and adds another x to the 2x on the left:
3x + 5 = -1
Now to isolate the 3x, I'll subtract 5 from both sides:
3x + 5 - 5 = -1 - 5
This cancels out the 5 on the left side, and subtracts 5 from the -1 on the right:
3x = -6
Now I'll divide both sides by 3 to get x on its own and find my solution:
3x ÷ 3 = -6 ÷ 3
This cancels out the 3 multiplying the x on the left, and it divides the -6 by 3.
x = -2
And there's your solution :)
