Right now you have a/3 = 7. You cannot know what a is yet because it is being divided by 3.
You just need to figure out a way of getting rid of that 3 so you just have a by itself. The way you can get rid of the 3 is by multiplying a/3 by 3, as that will just leave you with a (multiplying is the opposite of dividing so it cancels out).
However, as you’re multiplying a/3 by 3, you also have to multiply 7 by 3 (which is 21) as you have to do the multiplication on both sides of the equation.
Therefore, you’re left with a = 21
Answer:
The property used here is: Multiplication property of Equality
Step-by-step explanation:
Claire solved the expression
by two ways
Way 1: Solving using proportion:

By cross multiplying:

Divide both sides by 16

Way 2:
She also solve the same expression
by using following steps
Multiply both sides by 4

We need to tell the name of property that allowed her to go from
to 
The property used here is: Multiplication property of Equality
The property states that if A , B and C are real numbers then
A = B and AC = BC are equivalent.
Divide 171 by 3 which equals to 57
Thats the unit rate: 57
Answer:
w=10
Step-by-step explanation:
divide both sides by 2 to get the variable by itself.
w=10
make me brainliest
Do you have answer chioces ?