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If A+B = 76 & A -B = 38 What is A/B?

Sagot :

luana
[tex]A+B=76\\ A-B=38\ \ --->\ \ A=38+B\\\\ 38+B+B=76\\ 38+2B=76\ \ | subtract\ 38\\2B=38\ \ \ | divide\ by\ 2\\ B=19\\A=57\\\\ \frac{A}{B}=\frac{57}{19}=3[/tex]
A+B=76
A-B=38

A=38+B

Substitute into other
38+B+B=76
2b=38
b=19
A+19=76
A=38
B=19
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