Question

Identify which property of equality is used to transform Equation 1 to Equation 2.



Equation 1: 5 + x = 9

Equation 2: x = 4









A.
addition property of equality







B.
subtraction property of equality







C.
multiplication property of equality







D.
division property of equality

Answer 1

@iambatman

Answer 2

@sourwing

Answer 3

If you move the 5 in 5+x=9 to the RHS (Right Hand Side), wouldn't the number 5 become -5, so that would be subtraction.
If you want to look at it another way.
What would you do to 5+x=9 to get x=4?
Well clearly, it looks as though you have to subtract 5 to both sides.