Question

What is the value of the expression below when w, equals, 9w=9 and x, equals, 8x=8? 9w−7x

Answer 1

To find the value of the expression \( 9w - 7x \) given \( w = 9 \) and \( x = 8 \), we can substitute the values of \( w \) and \( x \) into the expression.

1. Substitute \( w = 9 \):
\[
9w = 9 \cdot 9 = 81
\]

2. Substitute \( x = 8 \):
\[
7x = 7 \cdot 8 = 56
\]

Now, substitute these values into the expression \( 9w - 7x \):
\[
9w - 7x = 81 - 56
\]

Calculate \( 81 - 56 \):
\[
81 - 56 = 25
\]

Thus, the value of the expression \( 9w - 7x \) is \( \boxed{25} \).