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2/5-(x/5)-10 = -x/3 // + -x/3
2/5-(x/5)-(-x/3)-10 = 0
(1/3)*x-(x/5)+2/5-10 = 0
2/15*x-48/5 = 0 // + 48/5
2/15*x = 48/5 // : 2/15
x = 48/5/2/15
x = 72
x = 72
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