#1**0 **

The sum of angles in a triangle adds up to 180 degrees. So we can subtract 60 to get 120 = 5x + 2y. Now we need to solve for y. Y is on the same side of the equation as x, so we need to move the x by subtracting 5x. Then we have 2y = 120 - 5x. Last, we need to divide by 2, as that is the coefficient of y. Now, we have y = 60 - 2.5x.

helperid1839321
Nov 4, 2017

#2**+1 **

Best Answer

This triangle is isosceles with AB = AC ....so....the angles opposite these sides are also =

So angle (5x)° = 40...so these two angles sum to 80°

So...this means that 2y + 20 must = 100

So

2y = 80

So....y = 40

CPhill
Nov 4, 2017

#3**+1 **

Cool! I didn't even see the fact the triangle was isosceles! I grant you one wish. (∩ ͡° ͜ʖ ͡°)⊃━☆

helperid1839321
Nov 4, 2017