The sum of two numbers is -12. one of the numbers is 4. what is the other number?

if he has no friends he cant give them out to his friends

step-by-step explanation:

no friends = cant give anything out

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180