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Solve 12x + 3 = 135

The solution of 12x + 3 = 135 is x = 11.

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The lines y = 12x + 3 and y = 135 meet at x = 1168101214166080100120140160180200220x = 11y = 12x + 3y = 135
The lines y = 12x + 3 and y = 135 meet at x = 11. 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+3=13512x + 3 = 135
  2. 2

    Subtract 3 from both sides:

    12x+3−3=135−3 ⇒ 12x=13212x + 3 - 3 = 135 - 3 \ \Rightarrow\ 12x = 132
  3. 3

    Divide both sides by 12:

    12x12=13212 ⇒ x=11\frac{12x}{12} = \frac{132}{12} \ \Rightarrow\ x = 11
  4. 4

    Check: put x = 11 back into the equation.

    12⋅11+3=132+3=135✓12\cdot11 + 3 = 132 + 3 = 135 \checkmark
LaTeX source of the formulas on this page
\[ 12x + 3 = 135\ \Rightarrow\ x = 11 \]
\[ 12x + 3 = 135 \]
\[ 12x + 3 - 3 = 135 - 3 \ \Rightarrow\ 12x = 132 \]
\[ \frac{12x}{12} = \frac{132}{12} \ \Rightarrow\ x = 11 \]
\[ 12\cdot11 + 3 = 132 + 3 = 135 \checkmark \]

Trying values of x in 12x + 3 = 135

x12x + 3Equals 135?
9111no
10123no
11135yes
12147no
13159no

Questions

What is x in 12x + 3 = 135?

The solution of 12x + 3 = 135 is x = 11.

How do you solve 12x + 3 = 135?

Subtract 3 from both sides to get 12x = 132, then divide both sides by 12 to get x = 11.

How do I check the answer?

Replace x by 11: 12(11) + 3 = 135, which is 135.

Similar equations

    Solve 12x + 3 = 135: x = 11 (steps and check) | WordGPT