Isolate variable x: First, we need to isolate the variable x on one side of the equation. We can start by adding 18 to both sides of the equation to cancel out the -18 on the left side. 7x - 18 + 18 = 3 + 18Simplify both sides: Now, we simplify both sides of the equation. 7x = 21Divide to solve x: Next, we divide both sides of the equation by 7 to solve for x. 7x / 7 = 21 / 7Get value of x: After dividing, we get the value of x. x = 3

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$7x-18 = 3$

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Algebra 2

Factor sums and differences of cubes

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7x-18 = 3

Isolate variable x: First, we need to isolate the variable x on one side of the equation. We can start by adding $18$ to both sides of the equation to cancel out the $-18$ on the left side. $\newline$ $7x - 18 + 18 = 3 + 18$
Simplify both sides: Now, we simplify both sides of the equation. $7x = 21$
Divide to solve $x$ : Next, we divide both sides of the equation by $7$ to solve for $x$ . $\frac{7x}{7} = \frac{21}{7}$
Get value of x: After dividing, we get the value of $x$ . $x = 3$