Solve for y. -31=3y+9-9y. Simplify your answer as much as posible

20/3 or 13⅓

Step-by-step explanation:

-31 = 3y + 9 - 9y

-31 = 9 - 6y

-40 = -6y

y = 40/6 = 20/3

Step-by-step explanation:

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.