3 years ago

Find the value of A in each case: Can some one help me please

Mathematics

2 answers:

marysya [2.9K]3 years ago

8 0

$75+3A+2A=180\\
5A=105\\
A=21$

Vladimir [108]3 years ago

3 0

$75^o+3A+2A=180^o\\\\5A+75^o=180^o\ \ \ \ \ |subtract\ 75^o\ from\ both\ sides\\\\5A=105^o\ \ \ \ \ \ \ |divide\ both\ sides\ by\ 5\\\\\boxed{A=21^o}$

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