10. If a>b and c is negative, then a\b blank b/c

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

the answer is b.

step-by-step explanation:

mujhko hui na