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slega [8]
3 years ago
8

What is the value of x?

Mathematics
2 answers:
creativ13 [48]3 years ago
8 0
Since all triangle angles add up to 180*, the equation is 180=100+4x-4.
this simplifies to x=21
slega [8]3 years ago
7 0
3x+x-4+100 = 180
4x +96 =180
4x = 180 -96
4x = 84
x=84/4
x=21
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