Find values of A and B show your reasoning

79

Step-by-step explanation: because when adding 70+9 you get 79 nothing more and or nothing less.

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

answer;

the correct answer

just use google you beautiful person.

have a nice day < 3