Question

Solve for the variable. 21− y/3=14
options
-21
12
7
21

Answer 1

To solve for \( y \) in the equation

\[
21 - \frac{y}{3} = 14,
\]

follow these steps:

1. Subtract 21 from both sides:

\[
-\frac{y}{3} = 14 - 21
\]

\[
-\frac{y}{3} = -7.
\]

2. Multiply both sides by -1 to eliminate the negative sign:

\[
\frac{y}{3} = 7.
\]

3. Multiply both sides by 3 to solve for \( y \):

\[
y = 7 \cdot 3 = 21.
\]

Thus, the solution is

\[
y = 21.
\]

So, the answer is \( 21 \).