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Solve 3x + 11 = 26

The solution of 3x + 11 = 26 is x = 5.

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The lines y = 3x + 11 and y = 26 meet at x = 524681051015202530354045x = 5y = 3x + 11y = 26
The lines y = 3x + 11 and y = 26 meet at x = 5. 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+11=263x + 11 = 26
  2. 2

    Subtract 11 from both sides:

    3x+11−11=26−11 ⇒ 3x=153x + 11 - 11 = 26 - 11 \ \Rightarrow\ 3x = 15
  3. 3

    Divide both sides by 3:

    3x3=153 ⇒ x=5\frac{3x}{3} = \frac{15}{3} \ \Rightarrow\ x = 5
  4. 4

    Check: put x = 5 back into the equation.

    3⋅5+11=15+11=26✓3\cdot5 + 11 = 15 + 11 = 26 \checkmark
LaTeX source of the formulas on this page
\[ 3x + 11 = 26\ \Rightarrow\ x = 5 \]
\[ 3x + 11 = 26 \]
\[ 3x + 11 - 11 = 26 - 11 \ \Rightarrow\ 3x = 15 \]
\[ \frac{3x}{3} = \frac{15}{3} \ \Rightarrow\ x = 5 \]
\[ 3\cdot5 + 11 = 15 + 11 = 26 \checkmark \]

Trying values of x in 3x + 11 = 26

x3x + 11Equals 26?
320no
423no
526yes
629no
732no

Questions

What is x in 3x + 11 = 26?

The solution of 3x + 11 = 26 is x = 5.

How do you solve 3x + 11 = 26?

Subtract 11 from both sides to get 3x = 15, then divide both sides by 3 to get x = 5.

How do I check the answer?

Replace x by 5: 3(5) + 11 = 26, which is 26.

Similar equations

    Solve 3x + 11 = 26: x = 5 (steps and check) | WordGPT