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Solve 5x + 15 = 60

The solution of 5x + 15 = 60 is x = 9.

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The lines y = 5x + 15 and y = 60 meet at x = 946810121430405060708090x = 9y = 5x + 15y = 60
The lines y = 5x + 15 and y = 60 meet at x = 9. The solution of the equation is the x-coordinate of the point where the two sides are equal.

How to work it out

  1. 1

    The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.

    5x+15=605x + 15 = 60
  2. 2

    Subtract 15 from both sides:

    5x+15−15=60−15 ⇒ 5x=455x + 15 - 15 = 60 - 15 \ \Rightarrow\ 5x = 45
  3. 3

    Divide both sides by 5:

    5x5=455 ⇒ x=9\frac{5x}{5} = \frac{45}{5} \ \Rightarrow\ x = 9
  4. 4

    Check: put x = 9 back into the equation.

    5⋅9+15=45+15=60✓5\cdot9 + 15 = 45 + 15 = 60 \checkmark
LaTeX source of the formulas on this page
\[ 5x + 15 = 60\ \Rightarrow\ x = 9 \]
\[ 5x + 15 = 60 \]
\[ 5x + 15 - 15 = 60 - 15 \ \Rightarrow\ 5x = 45 \]
\[ \frac{5x}{5} = \frac{45}{5} \ \Rightarrow\ x = 9 \]
\[ 5\cdot9 + 15 = 45 + 15 = 60 \checkmark \]

Trying values of x in 5x + 15 = 60

x5x + 15Equals 60?
750no
855no
960yes
1065no
1170no

Questions

What is x in 5x + 15 = 60?

The solution of 5x + 15 = 60 is x = 9.

How do you solve 5x + 15 = 60?

Subtract 15 from both sides to get 5x = 45, then divide both sides by 5 to get x = 9.

How do I check the answer?

Replace x by 9: 5(9) + 15 = 60, which is 60.

Similar equations

    Solve 5x + 15 = 60: x = 9 (steps and check) | WordGPT