WordGPT

Solve 7x + 7 = 77

The solution of 7x + 7 = 77 is x = 10.

Explain it step by step in chatMake a short video of it
The lines y = 7x + 7 and y = 77 meet at x = 1046810121416406080100120x = 10y = 7x + 7y = 77
The lines y = 7x + 7 and y = 77 meet at x = 10. 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=777x + 7 = 77
  2. 2

    Subtract 7 from both sides:

    7x+7−7=77−7 ⇒ 7x=707x + 7 - 7 = 77 - 7 \ \Rightarrow\ 7x = 70
  3. 3

    Divide both sides by 7:

    7x7=707 ⇒ x=10\frac{7x}{7} = \frac{70}{7} \ \Rightarrow\ x = 10
  4. 4

    Check: put x = 10 back into the equation.

    7⋅10+7=70+7=77✓7\cdot10 + 7 = 70 + 7 = 77 \checkmark
LaTeX source of the formulas on this page
\[ 7x + 7 = 77\ \Rightarrow\ x = 10 \]
\[ 7x + 7 = 77 \]
\[ 7x + 7 - 7 = 77 - 7 \ \Rightarrow\ 7x = 70 \]
\[ \frac{7x}{7} = \frac{70}{7} \ \Rightarrow\ x = 10 \]
\[ 7\cdot10 + 7 = 70 + 7 = 77 \checkmark \]

Trying values of x in 7x + 7 = 77

x7x + 7Equals 77?
863no
970no
1077yes
1184no
1291no

Questions

What is x in 7x + 7 = 77?

The solution of 7x + 7 = 77 is x = 10.

How do you solve 7x + 7 = 77?

Subtract 7 from both sides to get 7x = 70, then divide both sides by 7 to get x = 10.

How do I check the answer?

Replace x by 10: 7(10) + 7 = 77, which is 77.

Similar equations

    Solve 7x + 7 = 77: x = 10 (steps and check) | WordGPT