Question

69= 7x + 5x + 9. Please help. I need this done by 12/4/2020

Answer 1

X=5 if you are to substitute 5 for the x’a you should get 69

Answer 2

`\boxed{x=5}`

Solution Steps:

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1.) Swap sides so that all variable terms are on the left hand side:

• 
  `7x+5x+9=69`

- This is an optional step. I prefer the numbers to be on the left hand side, but it's not necessary.

Equation at the end of Step 1:

• 
  `7x+5x+9=69`

• 
  `69=7x+5x+9`

2.) Combine 7x and 5x:

• 
  `7x+5x=12x`

- We combine like terms because there is 2 x's, and we need 1 x.

Equation at the end of Step 2:

• 
  `12x+9=69`

3.) Subtract 9 from both sides:

• 
  `9-9=` Cancels Out

• 
  `69-9=60`

- When solving problems like this, to get x alone you have to do the opposite of what you see.

- In this case, we have a positive 9. So to get rid of 9 we do the opposite: -9 on each side.

Equation at the end of Step 3:

• 
  `12x=60`

4.) Divide both sides by 12:

• 
  `12x` ÷
  `12=x`

• 
  `60` ÷
  `12=5`

- When solving problems like this, to get x alone you have to do the opposite of what you see.

- In this case, we have 12 being multiplied by x. So to get rid of the 12 we do the opposite: Divide by 12 on each side.

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