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Solve 2x + 4 = 10

The solution of 2x + 4 = 10 is x = 3.

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The lines y = 2x + 4 and y = 10 meet at x = 3-224685101520x = 3y = 2x + 4y = 10
The lines y = 2x + 4 and y = 10 meet at x = 3. 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.

    2x+4=102x + 4 = 10
  2. 2

    Subtract 4 from both sides:

    2x+4−4=10−4 ⇒ 2x=62x + 4 - 4 = 10 - 4 \ \Rightarrow\ 2x = 6
  3. 3

    Divide both sides by 2:

    2x2=62 ⇒ x=3\frac{2x}{2} = \frac{6}{2} \ \Rightarrow\ x = 3
  4. 4

    Check: put x = 3 back into the equation.

    2⋅3+4=6+4=10✓2\cdot3 + 4 = 6 + 4 = 10 \checkmark
LaTeX source of the formulas on this page
\[ 2x + 4 = 10\ \Rightarrow\ x = 3 \]
\[ 2x + 4 = 10 \]
\[ 2x + 4 - 4 = 10 - 4 \ \Rightarrow\ 2x = 6 \]
\[ \frac{2x}{2} = \frac{6}{2} \ \Rightarrow\ x = 3 \]
\[ 2\cdot3 + 4 = 6 + 4 = 10 \checkmark \]

Trying values of x in 2x + 4 = 10

x2x + 4Equals 10?
16no
28no
310yes
412no
514no

Questions

What is x in 2x + 4 = 10?

The solution of 2x + 4 = 10 is x = 3.

How do you solve 2x + 4 = 10?

Subtract 4 from both sides to get 2x = 6, then divide both sides by 2 to get x = 3.

How do I check the answer?

Replace x by 3: 2(3) + 4 = 10, which is 10.

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    Solve 2x + 4 = 10: x = 3 (steps and check) | WordGPT