60 + 60 + 3x = 180
120 + 3x = 180
3x = 180 - 120
3x = 60
x = 60/3
x = 20
C) 20
Me podrías dar coronita por favor
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60 + 60 + 3x = 180
120 + 3x = 180
3x = 180 - 120
3x = 60
x = 60/3
x = 20
C) 20
Me podrías dar coronita por favor