0
Anonymous
4 and 2/5 + 8 and 1/5 = 12 and 3/5
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4.25 + 8.15 = 12.4
4/25 + 8/15 = 0.6933... (repeating).
4 + 15 = 19 + 8 + = 27 (alterative)
s = -70
If you mean: -4+3+2s = 15 then s = 8
The answer is 3/8 plus 6/4 = 15/8
s = 20