Solve for x: x/3 = 7

Understand the Problem

The question is asking to solve for x in the equation x/3 = 7. This involves isolating 'x' by multiplying both sides of the equation by 3.

Answer

$x = 21$

Steps to Solve

Isolate x To isolate $x$ in the equation $\frac{x}{3} = 7$, we need to eliminate the division by 3.
Multiply both sides by 3 Multiply both sides of the equation by 3 to cancel out the denominator on the left side: $$3 \cdot \frac{x}{3} = 3 \cdot 7$$
Simplify Simplify the equation: $$x = 21$$

$x = 21$

More Information

The solution to the equation $\frac{x}{3} = 7$ is $x = 21$. This means that if you divide 21 by 3, you will get 7.

Tips

A common mistake is to divide both sides of the equation by 3 instead of multiplying. This would result in $x/9 = 7/3$, which does not isolate $x$ and makes the problem more complex. Another mistake is to subtract 3 from both sides, which is not the correct operation to isolate $x$ when it's being divided by 3.

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