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Zinaida [17]
4 years ago
13

The length of river a is 560 miles more than twice the length of river B. River A is also 1550 miles longer than river B. Find t

he lengths of river A and B.
Mathematics
2 answers:
Virty [35]4 years ago
5 0
A = 2b + 560
a = b + 1550
----------------------
a - 2b = 560
a - b = 1550
---------------------
a - 2b = 560
-2(a - b = 1550)
------------------------
a - 2b = 560
-2a +2b = -3100
-a = -2540
a = 2540
-----------------------
2540 = b + 1550
2540 - 1550 = b
990 = b
raketka [301]4 years ago
4 0
River B is 990 miles and River A is 2,540 miles.
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