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Solve 6x + 3 = 99

The solution of 6x + 3 = 99 is x = 16.

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The lines y = 6x + 3 and y = 99 meet at x = 161012141618202260708090100110120130140x = 16y = 6x + 3y = 99
The lines y = 6x + 3 and y = 99 meet at x = 16. 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.

    6x+3=996x + 3 = 99
  2. 2

    Subtract 3 from both sides:

    6x+3−3=99−3 ⇒ 6x=966x + 3 - 3 = 99 - 3 \ \Rightarrow\ 6x = 96
  3. 3

    Divide both sides by 6:

    6x6=966 ⇒ x=16\frac{6x}{6} = \frac{96}{6} \ \Rightarrow\ x = 16
  4. 4

    Check: put x = 16 back into the equation.

    6⋅16+3=96+3=99✓6\cdot16 + 3 = 96 + 3 = 99 \checkmark
LaTeX source of the formulas on this page
\[ 6x + 3 = 99\ \Rightarrow\ x = 16 \]
\[ 6x + 3 = 99 \]
\[ 6x + 3 - 3 = 99 - 3 \ \Rightarrow\ 6x = 96 \]
\[ \frac{6x}{6} = \frac{96}{6} \ \Rightarrow\ x = 16 \]
\[ 6\cdot16 + 3 = 96 + 3 = 99 \checkmark \]

Trying values of x in 6x + 3 = 99

x6x + 3Equals 99?
1487no
1593no
1699yes
17105no
18111no

Questions

What is x in 6x + 3 = 99?

The solution of 6x + 3 = 99 is x = 16.

How do you solve 6x + 3 = 99?

Subtract 3 from both sides to get 6x = 96, then divide both sides by 6 to get x = 16.

How do I check the answer?

Replace x by 16: 6(16) + 3 = 99, which is 99.

Similar equations

    Solve 6x + 3 = 99: x = 16 (steps and check) | WordGPT