What must be true about the denominator before you can add or subtract rational
expressions?

wedfghjkl;

tyuiop[]ghjkl;

step-by-step explanatio89

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

you can use a^2+ b^2=c^2

alaska, florida, nevada, south dakota, texas, washington and wyoming, tenessee and new hampshire.

step-by-step explanation: