WordGPT

Solve 8x + 4 = 100

The solution of 8x + 4 = 100 is x = 12.

Explain it step by step in chatMake a short video of it
The lines y = 8x + 4 and y = 100 meet at x = 126810121416186080100120140x = 12y = 8x + 4y = 100
The lines y = 8x + 4 and y = 100 meet at x = 12. 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=1008x + 4 = 100
  2. 2

    Subtract 4 from both sides:

    8x+4−4=100−4 ⇒ 8x=968x + 4 - 4 = 100 - 4 \ \Rightarrow\ 8x = 96
  3. 3

    Divide both sides by 8:

    8x8=968 ⇒ x=12\frac{8x}{8} = \frac{96}{8} \ \Rightarrow\ x = 12
  4. 4

    Check: put x = 12 back into the equation.

    8⋅12+4=96+4=100✓8\cdot12 + 4 = 96 + 4 = 100 \checkmark
LaTeX source of the formulas on this page
\[ 8x + 4 = 100\ \Rightarrow\ x = 12 \]
\[ 8x + 4 = 100 \]
\[ 8x + 4 - 4 = 100 - 4 \ \Rightarrow\ 8x = 96 \]
\[ \frac{8x}{8} = \frac{96}{8} \ \Rightarrow\ x = 12 \]
\[ 8\cdot12 + 4 = 96 + 4 = 100 \checkmark \]

Trying values of x in 8x + 4 = 100

x8x + 4Equals 100?
1084no
1192no
12100yes
13108no
14116no

Questions

What is x in 8x + 4 = 100?

The solution of 8x + 4 = 100 is x = 12.

How do you solve 8x + 4 = 100?

Subtract 4 from both sides to get 8x = 96, then divide both sides by 8 to get x = 12.

How do I check the answer?

Replace x by 12: 8(12) + 4 = 100, which is 100.

Similar equations

    Solve 8x + 4 = 100: x = 12 (steps and check) | WordGPT