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Solve 4x + 1 = 69

The solution of 4x + 1 = 69 is x = 17.

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The lines y = 4x + 1 and y = 69 meet at x = 171214161820225060708090x = 17y = 4x + 1y = 69
The lines y = 4x + 1 and y = 69 meet at x = 17. 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+1=694x + 1 = 69
  2. 2

    Subtract 1 from both sides:

    4x+1−1=69−1 ⇒ 4x=684x + 1 - 1 = 69 - 1 \ \Rightarrow\ 4x = 68
  3. 3

    Divide both sides by 4:

    4x4=684 ⇒ x=17\frac{4x}{4} = \frac{68}{4} \ \Rightarrow\ x = 17
  4. 4

    Check: put x = 17 back into the equation.

    4⋅17+1=68+1=69✓4\cdot17 + 1 = 68 + 1 = 69 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 1 = 69\ \Rightarrow\ x = 17 \]
\[ 4x + 1 = 69 \]
\[ 4x + 1 - 1 = 69 - 1 \ \Rightarrow\ 4x = 68 \]
\[ \frac{4x}{4} = \frac{68}{4} \ \Rightarrow\ x = 17 \]
\[ 4\cdot17 + 1 = 68 + 1 = 69 \checkmark \]

Trying values of x in 4x + 1 = 69

x4x + 1Equals 69?
1561no
1665no
1769yes
1873no
1977no

Questions

What is x in 4x + 1 = 69?

The solution of 4x + 1 = 69 is x = 17.

How do you solve 4x + 1 = 69?

Subtract 1 from both sides to get 4x = 68, then divide both sides by 4 to get x = 17.

How do I check the answer?

Replace x by 17: 4(17) + 1 = 69, which is 69.

Similar equations

    Solve 4x + 1 = 69: x = 17 (steps and check) | WordGPT