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Solve 4x + 7 = 7

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

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The lines y = 4x + 7 and y = 7 meet at x = 0-6-4-2246-20-10102030x = 0y = 4x + 7y = 7
The lines y = 4x + 7 and y = 7 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.

    4x+7=74x + 7 = 7
  2. 2

    Subtract 7 from both sides:

    4x+7−7=7−7 ⇒ 4x=04x + 7 - 7 = 7 - 7 \ \Rightarrow\ 4x = 0
  3. 3

    Divide both sides by 4:

    4x4=04 ⇒ x=0\frac{4x}{4} = \frac{0}{4} \ \Rightarrow\ x = 0
  4. 4

    Check: put x = 0 back into the equation.

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

Trying values of x in 4x + 7 = 7

x4x + 7Equals 7?
-2-1no
-13no
07yes
111no
215no

Questions

What is x in 4x + 7 = 7?

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

How do you solve 4x + 7 = 7?

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

How do I check the answer?

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

Similar equations

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