Evaluate the expression for a = 2 and b = 3. 3(a + 5) - 4b
To evaluate the expression for a = 2 and b = 3, we substitute the values of a and b into the expression:
3(a + 5) - 4b
Substituting a = 2 and b = 3:
3(2 + 5) - 4(3)
Simplifying inside the parentheses:
3(7) - 4(3)
Multiply:
21 - 12
Subtract:
9
Thus, when a = 2 and b = 3, the expression 3(a + 5) - 4b evaluates to 9.