a-(3a-2a-5/10)-2a-57/6=-5/3
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a-(3a-(2a-5)/10-(2a-57)/6=-5/3
a-(30a-2a+5)/10-(2a -57)/6=-5/3
after-+
a-(28a+5)/10-(2a-57)/6=-5/3
lcm
a-(84a+15-10a+285)/30=-5/3
after-+
a-(74a+300)/30=-5/3
a-(74a+300)/30+5/3=0
lcm
a-(74a+300+50)/30=0
a-(74a+350)/30=0
(30a-74a-350)/30=0
(44a-350)=30
-44a=350+30
-44a=380
-11a=95
-a=95/11
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