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Solve 8x + 4 = 4

The solution of 8x + 4 = 4 is x = 0.

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The lines y = 8x + 4 and y = 4 meet at x = 0-6-4-2246-40-20204060x = 0y = 8x + 4y = 4
The lines y = 8x + 4 and y = 4 meet at x = 0. 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=48x + 4 = 4
  2. 2

    Subtract 4 from both sides:

    8x+4−4=4−4 ⇒ 8x=08x + 4 - 4 = 4 - 4 \ \Rightarrow\ 8x = 0
  3. 3

    Divide both sides by 8:

    8x8=08 ⇒ x=0\frac{8x}{8} = \frac{0}{8} \ \Rightarrow\ x = 0
  4. 4

    Check: put x = 0 back into the equation.

    8⋅0+4=0+4=4✓8\cdot0 + 4 = 0 + 4 = 4 \checkmark
LaTeX source of the formulas on this page
\[ 8x + 4 = 4\ \Rightarrow\ x = 0 \]
\[ 8x + 4 = 4 \]
\[ 8x + 4 - 4 = 4 - 4 \ \Rightarrow\ 8x = 0 \]
\[ \frac{8x}{8} = \frac{0}{8} \ \Rightarrow\ x = 0 \]
\[ 8\cdot0 + 4 = 0 + 4 = 4 \checkmark \]

Trying values of x in 8x + 4 = 4

x8x + 4Equals 4?
-2-12no
-1-4no
04yes
112no
220no

Questions

What is x in 8x + 4 = 4?

The solution of 8x + 4 = 4 is x = 0.

How do you solve 8x + 4 = 4?

Subtract 4 from both sides to get 8x = 0, then divide both sides by 8 to get x = 0.

How do I check the answer?

Replace x by 0: 8(0) + 4 = 4, which is 4.

Similar equations

    Solve 8x + 4 = 4: x = 0 (steps and check) | WordGPT