Does anyone know what properties (in math) are being illustrated by the following statements. ?

Question

If 5 + b = 13, then b =8.

If g - t = n, then g = n + t

If y - 2 = - 8. then 3 ( y - 2 ) = 3 ( - 8 )

Thanks to anyone who actually answers these questions.

Answer 1

If 5 + b = 13, then b =8.

Subtraction property of equality (five was subtracted from both sides of the equal sign).

If g - t = n, then g = n + t

Addition property of equality (t was added to both sides of the equal sign).

If y - 2 = - 8. then 3 ( y - 2 ) = 3 ( - 8 )

Multiplication property of equality (both sides of the equal sign were multiplied by 3).

Hope that helps!