KingKwek359
KingKwek359
12-11-2014
Mathematics
contestada
If A+B = 76 & A -B = 38 What is A/B?
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luana
luana
12-11-2014
[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]
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henryw90
henryw90
12-11-2014
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
Answer Link
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