Solve the equation for x (show all work and simplify answer)

8(x-5)+x=9(x-5)+5

Solve the equation for x (show all work and simplify answer)

8(x-5)+x=9(x-5)+5

Tutors, please sign in to answer this question.

Middletown, CT

Hi Theresa;

8(x-5)+x=9(x-5)+5

Let's combine as much as possible...

8x-40+x=9x-45+5

9x-40=9x-40

Let's cancel -40...

9x-40=9x-40

9x=9x

Let's cancel 9...

9x=9x

x=x

Decatur, AL

8(x-5) + x = 9(x-5) + 5

Distribute through.

8x - 40 + x = 9x - 45 + 5

Combine like terms.

8x + x - 40 = 9x - 45 + 5

9x - 40 = 9x -40

Add 40 to both sides.

9x = 9x

Subtract 9x from both sides.

0 = 0

Solution is true for all real numbers.

(-∞, ∞)

Wilton, CT

The problem with the recipe "PEMDAS " is that you should know that it's really "LPEMDAS" where the "L" stands for look!

8(x-5)+x=9(x-5)+5 subtract 5 from both sides and have

8(x-5)+x-5=9(x-5) or that 8(x-5)+(x-5)=9(x-5) or that 9(x-5)=9(x-5) an identity. It holds for all numbers.

Mark D.

Quantitative research SPECIALIST with academic/professional experience

New York, NY

5.0
(148 ratings)

John P.

Tutor of math and physics, recent college graduate

Short Hills, NJ

5.0
(21 ratings)

- Math 9736
- Math Help 5401
- Algebra 5028
- Precalculus 1534
- Solve Word Problem 94
- Word Problem 5060
- Trigonometry 1513
- Equations 704
- Equation 414
- Word Problems 1461