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malfutka [58]
3 years ago
8

I need help on this one :)

Mathematics
1 answer:
kvv77 [185]3 years ago
7 0
3x + 60 ° = 180
3x + 60 (-60) = 180 - 60
3x = 120
3x/3 = 120/3
x = 40


Check:
3x + 60 = 180
3(40) + 60 = 180
120 + 60 = 180




The answer is: x = 40
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