Đáp án:
`A = -15/8 + 7/8 - 4`
`A = -15/8 + 7/8 - 32/8`
`A = -5`
`B = -7/8 . 3/5 - 2/5 . 7/8 + 3 7/8`
`B = 7/8 . -3/5 - 2/5 . 7/8 + 3 7/8`
`B = 7/8 . (-3/5 - 2/5) + 31/8`
`B = 7/8 . (-1) + 31/8`
`B = -7/8 + 31/8`
`B = 3`
`C = (4 - 2 2/3) . 2 1/7 - 1 3/5 : 1/10`
`C = (12/3 - 8/3) . 15/7 - 8/5 . 10`
`C = 4/3 . 15/7 - 16/5`
`C = 20/7 - 16/5`
`C = -12/35`
`D = (-3,2) . -15/4 + (0,8 - 2 4/15) : 3 2/3`
`D = (-16/5) . -15/4 + (4/5 - 34/15) : 11/3`
`D = -139/20 - 22/15 . 3/11`
`D = -139/20 - 2/5`
`D = -147/20`
`E = 4. (-1/3)^3 - 2 . (1/2)^2 + 3 . 1/2 + 1`
`E = 4 . (-1/27) - 2 . 1/4 + 3. 1/2 + 1`
`E = -4/27 - 1/2 + 3. 1/2 + 1`
`E = -4/27 + 1/2 . (-1 + 3) + 1`
`E = -4/27 + 1/2 . 2 + 1`
`E = -4/27 + 1 + 1`
`E = 50/27`
`F = 11 3/13 - (2 4/7 + 5 3/13)`
`F = 146/13 - 18/7 - 68/13`
`F = (146/13 - 68/13) - 18/7`
`F = 6 - 18/7`
`F = 42/7 - 18/7`
`F = 24/7`
`G = 0,5 . 1 1/3 . 75% : 2/3 + 3/5`
`G = 1/2 . 4/3 . 3/4 . 3/2 + 3/5`
`G = (1 . 4 . 3 . 3)/(2 . 3 . 4 . 2) + 3/5`
`G = 3/4 + 3/5`
`G = 15/20 + 12/20`
`G = 27/20`