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Solve 8x + 7 = 7

The solution of 8x + 7 = 7 is x = 0.

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The lines y = 8x + 7 and y = 7 meet at x = 0-6-4-2246-40-20204060x = 0y = 8x + 7y = 7
The lines y = 8x + 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.

    8x+7=78x + 7 = 7
  2. 2

    Subtract 7 from both sides:

    8x+7−7=7−7 ⇒ 8x=08x + 7 - 7 = 7 - 7 \ \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+7=0+7=7✓8\cdot0 + 7 = 0 + 7 = 7 \checkmark
LaTeX source of the formulas on this page
\[ 8x + 7 = 7\ \Rightarrow\ x = 0 \]
\[ 8x + 7 = 7 \]
\[ 8x + 7 - 7 = 7 - 7 \ \Rightarrow\ 8x = 0 \]
\[ \frac{8x}{8} = \frac{0}{8} \ \Rightarrow\ x = 0 \]
\[ 8\cdot0 + 7 = 0 + 7 = 7 \checkmark \]

Trying values of x in 8x + 7 = 7

x8x + 7Equals 7?
-2-9no
-1-1no
07yes
115no
223no

Questions

What is x in 8x + 7 = 7?

The solution of 8x + 7 = 7 is x = 0.

How do you solve 8x + 7 = 7?

Subtract 7 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) + 7 = 7, which is 7.

Similar equations

    Solve 8x + 7 = 7: x = 0 (steps and check) | WordGPT