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Solve 3x + 15 = 63

The solution of 3x + 15 = 63 is x = 16.

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The lines y = 3x + 15 and y = 63 meet at x = 16101214161820224550556065707580x = 16y = 3x + 15y = 63
The lines y = 3x + 15 and y = 63 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.

    3x+15=633x + 15 = 63
  2. 2

    Subtract 15 from both sides:

    3x+15−15=63−15 ⇒ 3x=483x + 15 - 15 = 63 - 15 \ \Rightarrow\ 3x = 48
  3. 3

    Divide both sides by 3:

    3x3=483 ⇒ x=16\frac{3x}{3} = \frac{48}{3} \ \Rightarrow\ x = 16
  4. 4

    Check: put x = 16 back into the equation.

    3⋅16+15=48+15=63✓3\cdot16 + 15 = 48 + 15 = 63 \checkmark
LaTeX source of the formulas on this page
\[ 3x + 15 = 63\ \Rightarrow\ x = 16 \]
\[ 3x + 15 = 63 \]
\[ 3x + 15 - 15 = 63 - 15 \ \Rightarrow\ 3x = 48 \]
\[ \frac{3x}{3} = \frac{48}{3} \ \Rightarrow\ x = 16 \]
\[ 3\cdot16 + 15 = 48 + 15 = 63 \checkmark \]

Trying values of x in 3x + 15 = 63

x3x + 15Equals 63?
1457no
1560no
1663yes
1766no
1869no

Questions

What is x in 3x + 15 = 63?

The solution of 3x + 15 = 63 is x = 16.

How do you solve 3x + 15 = 63?

Subtract 15 from both sides to get 3x = 48, then divide both sides by 3 to get x = 16.

How do I check the answer?

Replace x by 16: 3(16) + 15 = 63, which is 63.

Similar equations

    Solve 3x + 15 = 63: x = 16 (steps and check) | WordGPT