an exterior of a triangle measure 140 of interior opposite angles are in ratio 3:1 find angles
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3x+1x=140
4x=140
x=140/4
x=35
3x=3×35=105
1x=1×35=35
4x=140
x=140/4
x=35
3x=3×35=105
1x=1×35=35
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