Tính thuận tiện
`A = 2 1/315 . 1/651 – 1/105 . 3 650/651 – 4/(315 . 651) + 4/105`
Tính thuận tiện `A = 2 1/315 . 1/651 – 1/105 . 3 650/651 – 4/(315 . 651) + 4/105`
By Clara
By Clara
Tính thuận tiện
`A = 2 1/315 . 1/651 – 1/105 . 3 650/651 – 4/(315 . 651) + 4/105`
`A=2 1/315. 1/651-1/105 .3 650/651-frac\{4}{315.651}+4/105`
`A=631/315. 1/651-1/105. 2603/651- frac\{4}{315.651}+4/105`
`A=frac\{631}{315.651}-frac\{2063}{105.651}-frac\{4}{315.651}+4/105`
`A=(frac\{631}{315.651}-frac\{4}{315.651})+(frac\{-2603}{105.651}+4/105)`
`A=frac\{627}{315.651}+(frac\{-2603}{105.651}+frac\{651.4}{105.651})`
`A=frac\{627}{315.651}+frac\{1}{105.651}`
`A=frac\{627.105}{315.651.105}+frac\{315}{315.651.105}`
`A=2/651`
`A = 2 1/315 . 1/651 – 1/105 . 3 650/651 – 4/{315.651} + 4/105`
`-> A = 631/315 . 1/651 – 1/105 . 2603/651 – 4/{315. 651} + 4/105`
`-> A = {631}/{315 . 651} – {2063}/{105 . 651} – 4/{315.651} + 4/105`
`-> A = (631/{315.651} – 4/{315.651} ) + ( {-2603}/{105 . 651} + 4/105 )`
`-> A = 627/{315 . 651} + ( {-2603}/{105.651} + {651 . 4}/ { 105 . 651} )`
`-> A = {627}/{315.651}+ ( {-2603}/{105.651} + {2604}/{105.651} )`
`-> A = 627/{315.651} + 1/{105.651}`
`-> A = {627 . 105}/{315.105 . 651} + {315}/{105.651.315}`
`-> A = {65835+315}/{315.105.651}`
`-> A = 2/651`
Vậy `A = 2/651`