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A triangle has angles described as follows: the first angle is four more than seven times a number, another angle is four less than the first and the third angle is twice as large as the first. what are the sizes of each of the angles?

Sagot :

helenchow9
1st angle: 7x+4
2nd: 7x+4-4=7x
3rd: 2(7x+4)
180=7x+4+2(7x+4)+7x
28x+12=180
28x=168
x=6
uchit1

Answer: 7x+4

I am not sure about the second one

2) 4 - 7x+4

3) 2(7x+4)

Step-by-step explanation:

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