WordGPT

Solve 7x + 7 = 133

The solution of 7x + 7 = 133 is x = 18.

Explain it step by step in chatMake a short video of it
The lines y = 7x + 7 and y = 133 meet at x = 1812141618202224100120140160180x = 18y = 7x + 7y = 133
The lines y = 7x + 7 and y = 133 meet at x = 18. 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+7=1337x + 7 = 133
  2. 2

    Subtract 7 from both sides:

    7x+7−7=133−7 ⇒ 7x=1267x + 7 - 7 = 133 - 7 \ \Rightarrow\ 7x = 126
  3. 3

    Divide both sides by 7:

    7x7=1267 ⇒ x=18\frac{7x}{7} = \frac{126}{7} \ \Rightarrow\ x = 18
  4. 4

    Check: put x = 18 back into the equation.

    7⋅18+7=126+7=133✓7\cdot18 + 7 = 126 + 7 = 133 \checkmark
LaTeX source of the formulas on this page
\[ 7x + 7 = 133\ \Rightarrow\ x = 18 \]
\[ 7x + 7 = 133 \]
\[ 7x + 7 - 7 = 133 - 7 \ \Rightarrow\ 7x = 126 \]
\[ \frac{7x}{7} = \frac{126}{7} \ \Rightarrow\ x = 18 \]
\[ 7\cdot18 + 7 = 126 + 7 = 133 \checkmark \]

Trying values of x in 7x + 7 = 133

x7x + 7Equals 133?
16119no
17126no
18133yes
19140no
20147no

Questions

What is x in 7x + 7 = 133?

The solution of 7x + 7 = 133 is x = 18.

How do you solve 7x + 7 = 133?

Subtract 7 from both sides to get 7x = 126, then divide both sides by 7 to get x = 18.

How do I check the answer?

Replace x by 18: 7(18) + 7 = 133, which is 133.

Similar equations

    Solve 7x + 7 = 133: x = 18 (steps and check) | WordGPT