Solve 4x + 6 = 74

The solution of 4x + 6 = 74 is x = 17.

4x + 6 = 74\ \Rightarrow\ x = 17

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The lines y = 4x + 6 and y = 74 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
The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.
$4x + 6 = 74$
2
Subtract 6 from both sides:
$4x + 6 - 6 = 74 - 6 \ \Rightarrow\ 4x = 68$
3
Divide both sides by 4:
$\frac{4x}{4} = \frac{68}{4} \ \Rightarrow\ x = 17$
4
Check: put x = 17 back into the equation.
$4\cdot17 + 6 = 68 + 6 = 74 \checkmark$

LaTeX source of the formulas on this page

\[ 4x + 6 = 74\ \Rightarrow\ x = 17 \]
\[ 4x + 6 = 74 \]
\[ 4x + 6 - 6 = 74 - 6 \ \Rightarrow\ 4x = 68 \]
\[ \frac{4x}{4} = \frac{68}{4} \ \Rightarrow\ x = 17 \]
\[ 4\cdot17 + 6 = 68 + 6 = 74 \checkmark \]

Trying values of x in 4x + 6 = 74

x	4x + 6	Equals 74?
15	66	no
16	70	no
17	74	yes
18	78	no
19	82	no

Questions

What is x in 4x + 6 = 74?

The solution of 4x + 6 = 74 is x = 17.

How do you solve 4x + 6 = 74?

Subtract 6 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) + 6 = 74, which is 74.

Solve 4x + 6 = 74

How to work it out

Trying values of x in 4x + 6 = 74

Questions

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