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Solve 4x + 1 = 73

The solution of 4x + 1 = 73 is x = 18.

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The lines y = 4x + 1 and y = 73 meet at x = 18121416182022245060708090100x = 18y = 4x + 1y = 73
The lines y = 4x + 1 and y = 73 meet at x = 18. 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=734x + 1 = 73
  2. 2

    Subtract 1 from both sides:

    4x+1−1=73−1 ⇒ 4x=724x + 1 - 1 = 73 - 1 \ \Rightarrow\ 4x = 72
  3. 3

    Divide both sides by 4:

    4x4=724 ⇒ x=18\frac{4x}{4} = \frac{72}{4} \ \Rightarrow\ x = 18
  4. 4

    Check: put x = 18 back into the equation.

    4⋅18+1=72+1=73✓4\cdot18 + 1 = 72 + 1 = 73 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 1 = 73\ \Rightarrow\ x = 18 \]
\[ 4x + 1 = 73 \]
\[ 4x + 1 - 1 = 73 - 1 \ \Rightarrow\ 4x = 72 \]
\[ \frac{4x}{4} = \frac{72}{4} \ \Rightarrow\ x = 18 \]
\[ 4\cdot18 + 1 = 72 + 1 = 73 \checkmark \]

Trying values of x in 4x + 1 = 73

x4x + 1Equals 73?
1665no
1769no
1873yes
1977no
2081no

Questions

What is x in 4x + 1 = 73?

The solution of 4x + 1 = 73 is x = 18.

How do you solve 4x + 1 = 73?

Subtract 1 from both sides to get 4x = 72, then divide both sides by 4 to get x = 18.

How do I check the answer?

Replace x by 18: 4(18) + 1 = 73, which is 73.

Similar equations

    Solve 4x + 1 = 73: x = 18 (steps and check) | WordGPT