Answer:
The value for 7w - 14 when w =8 is 42.
Step-by-step explanation:
First method is directly substituting the value:
Equation: 7w - 14 , for w= 8,
= 7w - 14 = 7*8 - 14 = 42.
Using distributive property :
The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.
Equation: 7w - 14
= 7(w-2) , for w=8,
= 7(8-2)
=7*8 - 7*2
=56 - 14
=42.
