your brother is 1/3 your age. your sister is 6 years older tahn your brother.Your sister is 10 years old. Write and solve a equa
2 answers:
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Answer: see attachment
<u>Step-by-step explanation:</u>
Since A = C = 105° and D = 60°,
then A + B + C + D = 360°
105° + B + 105° + 60° = 260°
B + 270° = 360°
B = 90°
