Substitution Property of Equality: If a=20, then 5a= _____.
The substitution rule states that If a=b then a can be substituted for b in any equation or expression.
So I think that 5a=5b but the number answer is 100. Am I correct?
But is 5a equal to 5b?
only if a=b
Yes a is equal to b. Thanks for your help!
If 2n=6, what property of equality is justified
You are on the right track with the substitution property. When we have the equation a=20, we can substitute the value of a with 20 in any equation or expression.
In this case, we are asked to find the value of 5a. Since a = 20, we substitute a with 20 in the expression 5a:
5a = 5 * 20
Multiplying 5 by 20 gives us:
5a = 100
So, you are correct! The value of 5a is indeed 100 when a equals 20.
correct.
But your reasoning is skewed. Forget about some "b". Substitute 20 for a.
5a = 5(20) = 100