WordGPT

Solve 7x + 15 = 64

The solution of 7x + 15 = 64 is x = 7.

Explain it step by step in chatMake a short video of it
The lines y = 7x + 15 and y = 64 meet at x = 72468101220406080100x = 7y = 7x + 15y = 64
The lines y = 7x + 15 and y = 64 meet at x = 7. 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+15=647x + 15 = 64
  2. 2

    Subtract 15 from both sides:

    7x+15−15=64−15 ⇒ 7x=497x + 15 - 15 = 64 - 15 \ \Rightarrow\ 7x = 49
  3. 3

    Divide both sides by 7:

    7x7=497 ⇒ x=7\frac{7x}{7} = \frac{49}{7} \ \Rightarrow\ x = 7
  4. 4

    Check: put x = 7 back into the equation.

    7⋅7+15=49+15=64✓7\cdot7 + 15 = 49 + 15 = 64 \checkmark
LaTeX source of the formulas on this page
\[ 7x + 15 = 64\ \Rightarrow\ x = 7 \]
\[ 7x + 15 = 64 \]
\[ 7x + 15 - 15 = 64 - 15 \ \Rightarrow\ 7x = 49 \]
\[ \frac{7x}{7} = \frac{49}{7} \ \Rightarrow\ x = 7 \]
\[ 7\cdot7 + 15 = 49 + 15 = 64 \checkmark \]

Trying values of x in 7x + 15 = 64

x7x + 15Equals 64?
550no
657no
764yes
871no
978no

Questions

What is x in 7x + 15 = 64?

The solution of 7x + 15 = 64 is x = 7.

How do you solve 7x + 15 = 64?

Subtract 15 from both sides to get 7x = 49, then divide both sides by 7 to get x = 7.

How do I check the answer?

Replace x by 7: 7(7) + 15 = 64, which is 64.

Similar equations

    Solve 7x + 15 = 64: x = 7 (steps and check) | WordGPT