9514 1404 393
Answer:
Dawn has $1670 in account 1 and $1570 in account 2.
Explanation:
Dawn can multiply the second equation by 8 and add 7 times the first equation.
8(3/8A +7/8B) +7(A -B) = 8(2000) +7(100)
10A = 16,700
A = 1670
B = 1570 . . . . 100 less than A
Dawn has $1670 in account 1 and $1570 in account 2.
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Check
3/8(1670) +7/8(1570) = 626.25 +1373.75 = 2000