Question

Simplify this expression for A= -7 , B=3 , C=-7

B - 2A - C

Answer 1

To simplify the expression \( B - 2A - C \) using the values \( A = -7 \), \( B = 3 \), and \( C = -7 \), we can substitute the values into the expression:

\[
B - 2A - C = 3 - 2(-7) - (-7)
\]

Now, we simplify the terms step by step:

1. Calculate \( 2(-7) \):
\[
2(-7) = -14
\]
Therefore, the expression becomes:
\[
3 - (-14) - (-7)
\]

2. Recognize that subtracting a negative is the same as adding:
\[
3 + 14 + 7
\]

3. Now, add the numbers together:
\[
3 + 14 = 17
\]
And then:
\[
17 + 7 = 24
\]

So, the simplified expression is:
\[
\boxed{24}
\]