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Solve 11x + 4 = 15

The solution of 11x + 4 = 15 is x = 1.

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The lines y = 11x + 4 and y = 15 meet at x = 1-4-2246-60-40-2020406080x = 1y = 11x + 4y = 15
The lines y = 11x + 4 and y = 15 meet at x = 1. 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.

    11x+4=1511x + 4 = 15
  2. 2

    Subtract 4 from both sides:

    11x+4−4=15−4 ⇒ 11x=1111x + 4 - 4 = 15 - 4 \ \Rightarrow\ 11x = 11
  3. 3

    Divide both sides by 11:

    11x11=1111 ⇒ x=1\frac{11x}{11} = \frac{11}{11} \ \Rightarrow\ x = 1
  4. 4

    Check: put x = 1 back into the equation.

    11⋅1+4=11+4=15✓11\cdot1 + 4 = 11 + 4 = 15 \checkmark
LaTeX source of the formulas on this page
\[ 11x + 4 = 15\ \Rightarrow\ x = 1 \]
\[ 11x + 4 = 15 \]
\[ 11x + 4 - 4 = 15 - 4 \ \Rightarrow\ 11x = 11 \]
\[ \frac{11x}{11} = \frac{11}{11} \ \Rightarrow\ x = 1 \]
\[ 11\cdot1 + 4 = 11 + 4 = 15 \checkmark \]

Trying values of x in 11x + 4 = 15

x11x + 4Equals 15?
-1-7no
04no
115yes
226no
337no

Questions

What is x in 11x + 4 = 15?

The solution of 11x + 4 = 15 is x = 1.

How do you solve 11x + 4 = 15?

Subtract 4 from both sides to get 11x = 11, then divide both sides by 11 to get x = 1.

How do I check the answer?

Replace x by 1: 11(1) + 4 = 15, which is 15.

Similar equations

    Solve 11x + 4 = 15: x = 1 (steps and check) | WordGPT