BEDMAS
Brackets
exponents
division & multiplication }
addition & subtraction} -these 2 last ones can be done interchangably or from left to right
Multiply what’s on the outside to the inside, the variable is always a lower case letter such as x,
The value of y in
is 6/7
<h3>How to solve for y?</h3>
The equation is given as:

Open the bracket
-3 = 7y - 9
Add 9 to both sides of the equation
7y = 6
Divide both sides by 7
y= 6/7
Hence, the value of y in
is 6/7
Read more about equations at:
brainly.com/question/2972832
#SPJ1
<u>Complete question</u>
Solve for y

The formula for calculating length is:

We can also write

or

Why it does not matter?
Let's assume we have 2 numbers, a and b.
When we perform a subtraction:

, we get another number

When we perform another subtraction:

, we get a number

When we raise

or

to the power of 2, the result is the same,

.