I need to know carly’s mistake

Carly multiply by -4 instead of dividing

Step-by-step explanation:

-4(7j+2) = 10

Divide each side by -4

-4/-4(7j+2) = 10/-4

7j+2 = -2.5

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

idk im srry

step-by-step explanation: