Tính giá trị sau một cách hợp lí

M = \(\frac{\frac{1}{3}-\frac{1}{7}+\frac{1}{13}}{\frac{7}{3}-\frac{7}{7}+\frac{7}{13}}+\frac{\frac{2}{11}+\frac{4}{17}-\frac{6}{19}}{\frac{7}{11}-\frac{21}{19}+\frac{14}{17}}\)-19\(\frac{3}{7}\)

N = \(\frac{49.\left(-113\right)+98.37-147}{7^3.\left(-9\right)}\)

Tính giá trị biểu thức :

M=( 28 . 4⁷ - 4⁸ ) : 64

N=\(\frac{49.\left(-113\right)+94.37-147}{7^3.\left(-9\right)}\)

Tính\(A=\frac{2}{3}+5\frac{3}{7}:2+\frac{9}{49}.\left(-7\right)+\frac{1}{12}.\left(-2\right)^4\)

Tính

a)\(\left(\frac{1}{2}.0,75\right)\left(0,25-\frac{2}{5}\right):\left(\frac{5}{9}-1\frac{1}{12}\right)\)

b)\(\frac{52.103-51}{52+51.103}.\frac{12.965+6.1009.4+6.2017.2}{1+3+5+7+...+47+49-225}\)

tính hợp lý

a) \(\left(\frac{-1}{3}\right)\). \(\frac{9}{11}+\left(\frac{-8}{9}\right).27\)

b) \(\left(\frac{1}{2}-\frac{13}{14}\right)\): \(\frac{5}{7}-\left(-\frac{-2}{21}+\frac{1}{7}\right):\frac{5}{7}\)

1 tính 

a \(\left(\frac{9}{14}-\frac{9}{21}\right):\left(\frac{4}{5}+\frac{5}{6}\right)\)

b \(\frac{7}{10}-\frac{-3}{4}+\frac{-5}{6}-\frac{1}{5}+\frac{-2}{3}\)

c \(\left(-2\right)^2.\left(\frac{3}{4}-0,25\right):\left(2\frac{1}{4}-1\frac{1}{6}\right)\)

d \(-\frac{1}{7}.\left(9\frac{1}{2}-0,75\right):\frac{2}{7}+0,625:1\frac{2}{3}\)

49.(-113)+98.37-147/7^3.(-9)