61.5-23.5=
38.1 I hope this helped!!!
Lin and her brother are 3 years apart so if Lin turns 6 her brother will turn 3 , and if Lin is 15 her brother will turn 12 and. If her brother is 25 Lin would be 28
It is a greater number (-3 > -12).
Think of it like this:
Subtract the negative value from any positive value, like 20.
20 - 12 = 8
20 - 3 = 17
As you can see, the equation involving -3 produces a larger number, meaning that the -3 took less value away. This makes it the greater number.
R/2 - r. i think... I'm not so sure. You divide 2 and r then subtract r.