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Solve 4x + 12 = 92

The solution of 4x + 12 = 92 is x = 20.

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The lines y = 4x + 12 and y = 92 meet at x = 2014161820222426708090100110120x = 20y = 4x + 12y = 92
The lines y = 4x + 12 and y = 92 meet at x = 20. 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.

    4x+12=924x + 12 = 92
  2. 2

    Subtract 12 from both sides:

    4x+12−12=92−12 ⇒ 4x=804x + 12 - 12 = 92 - 12 \ \Rightarrow\ 4x = 80
  3. 3

    Divide both sides by 4:

    4x4=804 ⇒ x=20\frac{4x}{4} = \frac{80}{4} \ \Rightarrow\ x = 20
  4. 4

    Check: put x = 20 back into the equation.

    4⋅20+12=80+12=92✓4\cdot20 + 12 = 80 + 12 = 92 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 12 = 92\ \Rightarrow\ x = 20 \]
\[ 4x + 12 = 92 \]
\[ 4x + 12 - 12 = 92 - 12 \ \Rightarrow\ 4x = 80 \]
\[ \frac{4x}{4} = \frac{80}{4} \ \Rightarrow\ x = 20 \]
\[ 4\cdot20 + 12 = 80 + 12 = 92 \checkmark \]

Trying values of x in 4x + 12 = 92

x4x + 12Equals 92?
1884no
1988no
2092yes
2196no
22100no

Questions

What is x in 4x + 12 = 92?

The solution of 4x + 12 = 92 is x = 20.

How do you solve 4x + 12 = 92?

Subtract 12 from both sides to get 4x = 80, then divide both sides by 4 to get x = 20.

How do I check the answer?

Replace x by 20: 4(20) + 12 = 92, which is 92.

Similar equations

    Solve 4x + 12 = 92: x = 20 (steps and check) | WordGPT