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Solve 4x + 3 = 19

The solution of 4x + 3 = 19 is x = 4.

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The lines y = 4x + 3 and y = 19 meet at x = 4-224681010203040x = 4y = 4x + 3y = 19
The lines y = 4x + 3 and y = 19 meet at x = 4. 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+3=194x + 3 = 19
  2. 2

    Subtract 3 from both sides:

    4x+3−3=19−3 ⇒ 4x=164x + 3 - 3 = 19 - 3 \ \Rightarrow\ 4x = 16
  3. 3

    Divide both sides by 4:

    4x4=164 ⇒ x=4\frac{4x}{4} = \frac{16}{4} \ \Rightarrow\ x = 4
  4. 4

    Check: put x = 4 back into the equation.

    4⋅4+3=16+3=19✓4\cdot4 + 3 = 16 + 3 = 19 \checkmark
LaTeX source of the formulas on this page
\[ 4x + 3 = 19\ \Rightarrow\ x = 4 \]
\[ 4x + 3 = 19 \]
\[ 4x + 3 - 3 = 19 - 3 \ \Rightarrow\ 4x = 16 \]
\[ \frac{4x}{4} = \frac{16}{4} \ \Rightarrow\ x = 4 \]
\[ 4\cdot4 + 3 = 16 + 3 = 19 \checkmark \]

Trying values of x in 4x + 3 = 19

x4x + 3Equals 19?
211no
315no
419yes
523no
627no

Questions

What is x in 4x + 3 = 19?

The solution of 4x + 3 = 19 is x = 4.

How do you solve 4x + 3 = 19?

Subtract 3 from both sides to get 4x = 16, then divide both sides by 4 to get x = 4.

How do I check the answer?

Replace x by 4: 4(4) + 3 = 19, which is 19.

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    Solve 4x + 3 = 19: x = 4 (steps and check) | WordGPT