WordGPT

Solve 8x + 4 = 28

The solution of 8x + 4 = 28 is x = 3.

Explain it step by step in chatMake a short video of it
The lines y = 8x + 4 and y = 28 meet at x = 3-22468-2020406080x = 3y = 8x + 4y = 28
The lines y = 8x + 4 and y = 28 meet at x = 3. 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.

    8x+4=288x + 4 = 28
  2. 2

    Subtract 4 from both sides:

    8x+4−4=28−4 ⇒ 8x=248x + 4 - 4 = 28 - 4 \ \Rightarrow\ 8x = 24
  3. 3

    Divide both sides by 8:

    8x8=248 ⇒ x=3\frac{8x}{8} = \frac{24}{8} \ \Rightarrow\ x = 3
  4. 4

    Check: put x = 3 back into the equation.

    8⋅3+4=24+4=28✓8\cdot3 + 4 = 24 + 4 = 28 \checkmark
LaTeX source of the formulas on this page
\[ 8x + 4 = 28\ \Rightarrow\ x = 3 \]
\[ 8x + 4 = 28 \]
\[ 8x + 4 - 4 = 28 - 4 \ \Rightarrow\ 8x = 24 \]
\[ \frac{8x}{8} = \frac{24}{8} \ \Rightarrow\ x = 3 \]
\[ 8\cdot3 + 4 = 24 + 4 = 28 \checkmark \]

Trying values of x in 8x + 4 = 28

x8x + 4Equals 28?
112no
220no
328yes
436no
544no

Questions

What is x in 8x + 4 = 28?

The solution of 8x + 4 = 28 is x = 3.

How do you solve 8x + 4 = 28?

Subtract 4 from both sides to get 8x = 24, then divide both sides by 8 to get x = 3.

How do I check the answer?

Replace x by 3: 8(3) + 4 = 28, which is 28.

Similar equations

    Solve 8x + 4 = 28: x = 3 (steps and check) | WordGPT