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Solve 7x + 4 = 4

The solution of 7x + 4 = 4 is x = 0.

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The lines y = 7x + 4 and y = 4 meet at x = 0-6-4-2246-40-202040x = 0y = 7x + 4y = 4
The lines y = 7x + 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.

    7x+4=47x + 4 = 4
  2. 2

    Subtract 4 from both sides:

    7x+4−4=4−4 ⇒ 7x=07x + 4 - 4 = 4 - 4 \ \Rightarrow\ 7x = 0
  3. 3

    Divide both sides by 7:

    7x7=07 ⇒ x=0\frac{7x}{7} = \frac{0}{7} \ \Rightarrow\ x = 0
  4. 4

    Check: put x = 0 back into the equation.

    7⋅0+4=0+4=4✓7\cdot0 + 4 = 0 + 4 = 4 \checkmark
LaTeX source of the formulas on this page
\[ 7x + 4 = 4\ \Rightarrow\ x = 0 \]
\[ 7x + 4 = 4 \]
\[ 7x + 4 - 4 = 4 - 4 \ \Rightarrow\ 7x = 0 \]
\[ \frac{7x}{7} = \frac{0}{7} \ \Rightarrow\ x = 0 \]
\[ 7\cdot0 + 4 = 0 + 4 = 4 \checkmark \]

Trying values of x in 7x + 4 = 4

x7x + 4Equals 4?
-2-10no
-1-3no
04yes
111no
218no

Questions

What is x in 7x + 4 = 4?

The solution of 7x + 4 = 4 is x = 0.

How do you solve 7x + 4 = 4?

Subtract 4 from both sides to get 7x = 0, then divide both sides by 7 to get x = 0.

How do I check the answer?

Replace x by 0: 7(0) + 4 = 4, which is 4.

Similar equations

    Solve 7x + 4 = 4: x = 0 (steps and check) | WordGPT