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Solve 4x + 4 = 28

The solution of 4x + 4 = 28 is x = 6.

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The lines y = 4x + 4 and y = 28 meet at x = 6246810121020304050x = 6y = 4x + 4y = 28
The lines y = 4x + 4 and y = 28 meet at x = 6. 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+4=284x + 4 = 28
  2. 2

    Subtract 4 from both sides:

    4x+4−4=28−4 ⇒ 4x=244x + 4 - 4 = 28 - 4 \ \Rightarrow\ 4x = 24
  3. 3

    Divide both sides by 4:

    4x4=244 ⇒ x=6\frac{4x}{4} = \frac{24}{4} \ \Rightarrow\ x = 6
  4. 4

    Check: put x = 6 back into the equation.

    4⋅6+4=24+4=28✓4\cdot6 + 4 = 24 + 4 = 28 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 4 = 28\ \Rightarrow\ x = 6 \]
\[ 4x + 4 = 28 \]
\[ 4x + 4 - 4 = 28 - 4 \ \Rightarrow\ 4x = 24 \]
\[ \frac{4x}{4} = \frac{24}{4} \ \Rightarrow\ x = 6 \]
\[ 4\cdot6 + 4 = 24 + 4 = 28 \checkmark \]

Trying values of x in 4x + 4 = 28

x4x + 4Equals 28?
420no
524no
628yes
732no
836no

Questions

What is x in 4x + 4 = 28?

The solution of 4x + 4 = 28 is x = 6.

How do you solve 4x + 4 = 28?

Subtract 4 from both sides to get 4x = 24, then divide both sides by 4 to get x = 6.

How do I check the answer?

Replace x by 6: 4(6) + 4 = 28, which is 28.

Similar equations

    Solve 4x + 4 = 28: x = 6 (steps and check) | WordGPT