Solve: 7/9=21/(answer)
this is fractions.
a.27
b.14
c.3
4.14/9
pls

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

answerthe vertex form

step-by-step explanation: