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Katelynn Kane
Mathematics
20 April, 05:44
A+b+c+d=770
a+b=c+d
a-b=49
c-d=211
Find numbers.
+4
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Devyn Kim
20 April, 05:51
0
A+b = c+d
a+b = 770/2 (a+b+c+d = 770)
a+b = 385
c+d = 385
a+b+a-b = 385+49
2a = 434
a = 434/2
a = 217
a-b=49
217-49 = b
b = 168
c+d+c-d = 385+211
2c = 596
c = 596/2
c = 298
c-d = 211
c-211 = d
298-211 = d
d = 87
Therefore, a=217, b=168, c=298, d=87
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