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Solve 4x + 5 = 17

The solution of 4x + 5 = 17 is x = 3.

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The lines y = 4x + 5 and y = 17 meet at x = 3-22468-1010203040x = 3y = 4x + 5y = 17
The lines y = 4x + 5 and y = 17 meet at x = 3. 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+5=174x + 5 = 17
  2. 2

    Subtract 5 from both sides:

    4x+5−5=17−5 ⇒ 4x=124x + 5 - 5 = 17 - 5 \ \Rightarrow\ 4x = 12
  3. 3

    Divide both sides by 4:

    4x4=124 ⇒ x=3\frac{4x}{4} = \frac{12}{4} \ \Rightarrow\ x = 3
  4. 4

    Check: put x = 3 back into the equation.

    4⋅3+5=12+5=17✓4\cdot3 + 5 = 12 + 5 = 17 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 5 = 17\ \Rightarrow\ x = 3 \]
\[ 4x + 5 = 17 \]
\[ 4x + 5 - 5 = 17 - 5 \ \Rightarrow\ 4x = 12 \]
\[ \frac{4x}{4} = \frac{12}{4} \ \Rightarrow\ x = 3 \]
\[ 4\cdot3 + 5 = 12 + 5 = 17 \checkmark \]

Trying values of x in 4x + 5 = 17

x4x + 5Equals 17?
19no
213no
317yes
421no
525no

Questions

What is x in 4x + 5 = 17?

The solution of 4x + 5 = 17 is x = 3.

How do you solve 4x + 5 = 17?

Subtract 5 from both sides to get 4x = 12, then divide both sides by 4 to get x = 3.

How do I check the answer?

Replace x by 3: 4(3) + 5 = 17, which is 17.

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    Solve 4x + 5 = 17: x = 3 (steps and check) | WordGPT