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Solve 5x + 4 = 49

The solution of 5x + 4 = 49 is x = 9.

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The lines y = 5x + 4 and y = 49 meet at x = 946810121420304050607080x = 9y = 5x + 4y = 49
The lines y = 5x + 4 and y = 49 meet at x = 9. 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.

    5x+4=495x + 4 = 49
  2. 2

    Subtract 4 from both sides:

    5x+4−4=49−4 ⇒ 5x=455x + 4 - 4 = 49 - 4 \ \Rightarrow\ 5x = 45
  3. 3

    Divide both sides by 5:

    5x5=455 ⇒ x=9\frac{5x}{5} = \frac{45}{5} \ \Rightarrow\ x = 9
  4. 4

    Check: put x = 9 back into the equation.

    5⋅9+4=45+4=49✓5\cdot9 + 4 = 45 + 4 = 49 \checkmark
LaTeX source of the formulas on this page
\[ 5x + 4 = 49\ \Rightarrow\ x = 9 \]
\[ 5x + 4 = 49 \]
\[ 5x + 4 - 4 = 49 - 4 \ \Rightarrow\ 5x = 45 \]
\[ \frac{5x}{5} = \frac{45}{5} \ \Rightarrow\ x = 9 \]
\[ 5\cdot9 + 4 = 45 + 4 = 49 \checkmark \]

Trying values of x in 5x + 4 = 49

x5x + 4Equals 49?
739no
844no
949yes
1054no
1159no

Questions

What is x in 5x + 4 = 49?

The solution of 5x + 4 = 49 is x = 9.

How do you solve 5x + 4 = 49?

Subtract 4 from both sides to get 5x = 45, then divide both sides by 5 to get x = 9.

How do I check the answer?

Replace x by 9: 5(9) + 4 = 49, which is 49.

Similar equations

    Solve 5x + 4 = 49: x = 9 (steps and check) | WordGPT