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Solve 7x + 12 = 12

The solution of 7x + 12 = 12 is x = 0.

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The lines y = 7x + 12 and y = 12 meet at x = 0-6-4-2246-20204060x = 0y = 7x + 12y = 12
The lines y = 7x + 12 and y = 12 meet at x = 0. 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.

    7x+12=127x + 12 = 12
  2. 2

    Subtract 12 from both sides:

    7x+12−12=12−12 ⇒ 7x=07x + 12 - 12 = 12 - 12 \ \Rightarrow\ 7x = 0
  3. 3

    Divide both sides by 7:

    7x7=07 ⇒ x=0\frac{7x}{7} = \frac{0}{7} \ \Rightarrow\ x = 0
  4. 4

    Check: put x = 0 back into the equation.

    7⋅0+12=0+12=12✓7\cdot0 + 12 = 0 + 12 = 12 \checkmark
LaTeX source of the formulas on this page
\[ 7x + 12 = 12\ \Rightarrow\ x = 0 \]
\[ 7x + 12 = 12 \]
\[ 7x + 12 - 12 = 12 - 12 \ \Rightarrow\ 7x = 0 \]
\[ \frac{7x}{7} = \frac{0}{7} \ \Rightarrow\ x = 0 \]
\[ 7\cdot0 + 12 = 0 + 12 = 12 \checkmark \]

Trying values of x in 7x + 12 = 12

x7x + 12Equals 12?
-2-2no
-15no
012yes
119no
226no

Questions

What is x in 7x + 12 = 12?

The solution of 7x + 12 = 12 is x = 0.

How do you solve 7x + 12 = 12?

Subtract 12 from both sides to get 7x = 0, then divide both sides by 7 to get x = 0.

How do I check the answer?

Replace x by 0: 7(0) + 12 = 12, which is 12.

Similar equations

    Solve 7x + 12 = 12: x = 0 (steps and check) | WordGPT