PLS HELP !!! x - 4 , 100 degrees , 3x ( the degrees in the triangle ) * the triangle is 180 degrees in total * what is the valu
e of x
1 answer:
Set that all equal to 180:
100+x-4+3x=180
x-4+3x=80
4x=84
x=21
mark brainliest pls!
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