WordGPT

Solve 4x + 8 = 84

The solution of 4x + 8 = 84 is x = 19.

Explain it step by step in chatMake a short video of it
The lines y = 4x + 8 and y = 84 meet at x = 1914161820222460708090100110x = 19y = 4x + 8y = 84
The lines y = 4x + 8 and y = 84 meet at x = 19. 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.

    4x+8=844x + 8 = 84
  2. 2

    Subtract 8 from both sides:

    4x+8−8=84−8 ⇒ 4x=764x + 8 - 8 = 84 - 8 \ \Rightarrow\ 4x = 76
  3. 3

    Divide both sides by 4:

    4x4=764 ⇒ x=19\frac{4x}{4} = \frac{76}{4} \ \Rightarrow\ x = 19
  4. 4

    Check: put x = 19 back into the equation.

    4⋅19+8=76+8=84✓4\cdot19 + 8 = 76 + 8 = 84 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 8 = 84\ \Rightarrow\ x = 19 \]
\[ 4x + 8 = 84 \]
\[ 4x + 8 - 8 = 84 - 8 \ \Rightarrow\ 4x = 76 \]
\[ \frac{4x}{4} = \frac{76}{4} \ \Rightarrow\ x = 19 \]
\[ 4\cdot19 + 8 = 76 + 8 = 84 \checkmark \]

Trying values of x in 4x + 8 = 84

x4x + 8Equals 84?
1776no
1880no
1984yes
2088no
2192no

Questions

What is x in 4x + 8 = 84?

The solution of 4x + 8 = 84 is x = 19.

How do you solve 4x + 8 = 84?

Subtract 8 from both sides to get 4x = 76, then divide both sides by 4 to get x = 19.

How do I check the answer?

Replace x by 19: 4(19) + 8 = 84, which is 84.

Similar equations

    Solve 4x + 8 = 84: x = 19 (steps and check) | WordGPT