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7*7*((2*22)/7)+7*10*((2*22)/7) = 0
49*((2*22)/7)+7*10*((2*22)/7) = 0
49*(44/7)+7*10*((2*22)/7) = 0
44/7*49+7*10*((2*22)/7) = 0
7*10*((2*22)/7)+308 = 0
70*((2*22)/7)+308 = 0
70*(44/7)+308 = 0
44/7*70+308 = 0
308+440 = 0
748 = 0
L <> R
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