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

Answer:

 $\boxed{x=5}$

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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