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Solve 12x + 4 = 160

The solution of 12x + 4 = 160 is x = 13.

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The lines y = 12x + 4 and y = 160 meet at x = 138101214161880100120140160180200220240x = 13y = 12x + 4y = 160
The lines y = 12x + 4 and y = 160 meet at x = 13. 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.

    12x+4=16012x + 4 = 160
  2. 2

    Subtract 4 from both sides:

    12x+4−4=160−4 ⇒ 12x=15612x + 4 - 4 = 160 - 4 \ \Rightarrow\ 12x = 156
  3. 3

    Divide both sides by 12:

    12x12=15612 ⇒ x=13\frac{12x}{12} = \frac{156}{12} \ \Rightarrow\ x = 13
  4. 4

    Check: put x = 13 back into the equation.

    12⋅13+4=156+4=160✓12\cdot13 + 4 = 156 + 4 = 160 \checkmark
LaTeX source of the formulas on this page
\[ 12x + 4 = 160\ \Rightarrow\ x = 13 \]
\[ 12x + 4 = 160 \]
\[ 12x + 4 - 4 = 160 - 4 \ \Rightarrow\ 12x = 156 \]
\[ \frac{12x}{12} = \frac{156}{12} \ \Rightarrow\ x = 13 \]
\[ 12\cdot13 + 4 = 156 + 4 = 160 \checkmark \]

Trying values of x in 12x + 4 = 160

x12x + 4Equals 160?
11136no
12148no
13160yes
14172no
15184no

Questions

What is x in 12x + 4 = 160?

The solution of 12x + 4 = 160 is x = 13.

How do you solve 12x + 4 = 160?

Subtract 4 from both sides to get 12x = 156, then divide both sides by 12 to get x = 13.

How do I check the answer?

Replace x by 13: 12(13) + 4 = 160, which is 160.

Similar equations

    Solve 12x + 4 = 160: x = 13 (steps and check) | WordGPT