Question

Which property of equality was used.88 = 33 + 5x88 - 33 = (33 + 5x) - 33

Answer 1

Given the following equation:

`88=33+5x`

You can see this step given in the exercise:

`88-33=(33+5x)-33​`

As you can notice, the number 33 is subtracted from both sides of the equation.

There is a property of equality that states that, if:

`a=b`

Then:

`a-c=b-c`

This property is called the Subtraction property of equality. This states that if you subtract from one side of the equation, you must subtract from the other side in orde to keep the equation balanced.

The answer is: Subtraction property of equality.