tiffanyb2 tiffanyb2

02-11-2017
Mathematics

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musiclover10045 musiclover10045

02-11-2017

exterior angles need to equal 360 degrees

60 +68+54+65 = 247

360-247 = 113

so 3x+13 + 4x-12 = 113

7x+1 = 113

7x = 112

x = 112/7 = 16

answer is x = 16

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