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Javon Lucero
26 May, 06:11
A+b-c = 170 B+c-A = 130
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Max Dyer
26 May, 07:15
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The correct answer is A = 110, B = 40, C=20 ...
Explanation
If A+B-C = 170 and B+C-A=130,
=C+A = 130
or, C = 130 - A
Again, A+B-C = 170
or, A+B = 170+C
A+B = 170+130-A (c=130-A)
A+B = 300-A
2A+B = 300
A+B = 300/2
A+B = 150
A+B-C = 170
A+B = 170+C
150 = 170 + C (A+B = 150)
or, C = 20 ... (1.)
A+C = 130
or, A + 20 = 130 (A=110) ... (2)
A+B = 150
110+B = 150
B = 150-110
B = 40 ... (3)
Therefore, A = 110, B = 40, C=20 ...
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