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Solve 2x + 2 = 30

The solution of 2x + 2 = 30 is x = 14.

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The lines y = 2x + 2 and y = 30 meet at x = 1481012141618202025303540x = 14y = 2x + 2y = 30
The lines y = 2x + 2 and y = 30 meet at x = 14. 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+2=302x + 2 = 30
  2. 2

    Subtract 2 from both sides:

    2x+2−2=30−2 ⇒ 2x=282x + 2 - 2 = 30 - 2 \ \Rightarrow\ 2x = 28
  3. 3

    Divide both sides by 2:

    2x2=282 ⇒ x=14\frac{2x}{2} = \frac{28}{2} \ \Rightarrow\ x = 14
  4. 4

    Check: put x = 14 back into the equation.

    2⋅14+2=28+2=30✓2\cdot14 + 2 = 28 + 2 = 30 \checkmark
LaTeX source of the formulas on this page
\[ 2x + 2 = 30\ \Rightarrow\ x = 14 \]
\[ 2x + 2 = 30 \]
\[ 2x + 2 - 2 = 30 - 2 \ \Rightarrow\ 2x = 28 \]
\[ \frac{2x}{2} = \frac{28}{2} \ \Rightarrow\ x = 14 \]
\[ 2\cdot14 + 2 = 28 + 2 = 30 \checkmark \]

Trying values of x in 2x + 2 = 30

x2x + 2Equals 30?
1226no
1328no
1430yes
1532no
1634no

Questions

What is x in 2x + 2 = 30?

The solution of 2x + 2 = 30 is x = 14.

How do you solve 2x + 2 = 30?

Subtract 2 from both sides to get 2x = 28, then divide both sides by 2 to get x = 14.

How do I check the answer?

Replace x by 14: 2(14) + 2 = 30, which is 30.

Similar equations

    Solve 2x + 2 = 30: x = 14 (steps and check) | WordGPT