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Solve 3x + 8 = 65

The solution of 3x + 8 = 65 is x = 19.

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The lines y = 3x + 8 and y = 65 meet at x = 19141618202224455055606570758085x = 19y = 3x + 8y = 65
The lines y = 3x + 8 and y = 65 meet at x = 19. 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.

    3x+8=653x + 8 = 65
  2. 2

    Subtract 8 from both sides:

    3x+8−8=65−8 ⇒ 3x=573x + 8 - 8 = 65 - 8 \ \Rightarrow\ 3x = 57
  3. 3

    Divide both sides by 3:

    3x3=573 ⇒ x=19\frac{3x}{3} = \frac{57}{3} \ \Rightarrow\ x = 19
  4. 4

    Check: put x = 19 back into the equation.

    3⋅19+8=57+8=65✓3\cdot19 + 8 = 57 + 8 = 65 \checkmark
LaTeX source of the formulas on this page
\[ 3x + 8 = 65\ \Rightarrow\ x = 19 \]
\[ 3x + 8 = 65 \]
\[ 3x + 8 - 8 = 65 - 8 \ \Rightarrow\ 3x = 57 \]
\[ \frac{3x}{3} = \frac{57}{3} \ \Rightarrow\ x = 19 \]
\[ 3\cdot19 + 8 = 57 + 8 = 65 \checkmark \]

Trying values of x in 3x + 8 = 65

x3x + 8Equals 65?
1759no
1862no
1965yes
2068no
2171no

Questions

What is x in 3x + 8 = 65?

The solution of 3x + 8 = 65 is x = 19.

How do you solve 3x + 8 = 65?

Subtract 8 from both sides to get 3x = 57, then divide both sides by 3 to get x = 19.

How do I check the answer?

Replace x by 19: 3(19) + 8 = 65, which is 65.

Similar equations

    Solve 3x + 8 = 65: x = 19 (steps and check) | WordGPT