What is the value of y? *
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∴ 3y + 53° + 7y - 55° = 180°
∴ 3y + 7y + 53° - 55° = 180°
∴ 10y - 2° = 180°
∴ y - 2° = 180° / 10°
∴ y = 18° - 2°
∴ y = 16°
1) ( 3y + 53 )° = 3 ( 16° ) + 53°
= 48° + 53°
= 101°
2) ( 7y - 55 )° = 7 ( 16° ) - 55°
= 112° - 55°
= 57°
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Step-by-step explanation:
3y + 53° = 7y - 55° (alternate exterior angles are equal)
55° + 53° = 7y - 3y
108° = 4y
108°/4 = y
27° = y
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