hi there! lets see if i can help
so we know a triangle = 180 degrees so were left with 120. this means the other 2 angles represent 120
so now they are in a ratio of 5:7
5x and 7x
We attach the x to help us find the exact degrees of each angle.
So, in short....5x + 7x = 120 Now, let's go solve.
12x = 120 we combined like terms
x = 12 now we will substitute this value into our two angles to find out exactly how many degrees they each are.
12x/10 = 100/10 we divide each side by 10
5x10=50
7x10=70
70+60=130
130+50=180!
we got it!!
