.(5.3^11+4.3^12):(3^9.5^2-3^9.2^3)

=(5.3^11+4.3^12):(3^9.5^2-3^9.2^3)

=(5.3^11+4.3^11.3):[3^9.(5^2-2^3)]

=(5.3^11+12.3^11):[3^9.17]

=3^11.(5+12):(3^9.17)

=(3^11.17):(3^9.17)

=17.(3^11:3^9)

=17.3^2

=17.9

=153

tk nha

bai cua kacura dung nhung 4 dong cuoi la sai to

co khong co kieu phan phoi nhu vay ma phai thay la 3^11:3^9( nhan 17 chia 17 thi khi nao cung nhan duoc ket qua giong nhau)

                                                                           =3^2=9

a) (-124) + 24 = -100
b) 37. 78 + 37. 22
=  37 . ( 78 + 22 )
=  37 . 100
= 3700

\(a) (-124) + 24 = -100 b) 37. 78 + 37. 22 = 37 . ( 78 + 22 ) = 37 . 100 = 3700\)

a) (- 124) + 24                                          b) 37 . 78 + 37 . 22

= - ( 124 - 24)                                              =37 . ( 78 + 22)

= - 100                                                        =37 . 100 

                                                                    3700

a, 47.69-31(-47)

=47(69+31)

=47.100

4700

b,(-14)(-25)+25(-11)

=14.25+25(-11)

=25(14-11)

=25.3=75

a) \(=\left(\left(-\frac{1}{4}-\frac{5}{3}\right)+\frac{7}{33}\right)-\left(-\frac{15}{12}+\frac{6}{11}-\frac{48}{49}\right)\)

\(=\left(-\frac{23}{12}+\frac{7}{33}\right)+\frac{15}{12}-\frac{6}{11}+\frac{48}{49}\)

\(=\left(-\frac{23}{12}+\frac{15}{12}\right)+\left(\frac{9}{33}-\frac{6}{11}\right)+\frac{48}{49}\)

\(=-\frac{2}{3}-\frac{3}{11}+\frac{48}{49}\)

\(=\frac{65}{1617}\)

b) \(=\frac{11}{125}+\left(-\frac{17}{18}+\frac{4}{9}\right)+\left(-\frac{5}{7}+\frac{17}{14}\right)\)

\(=\frac{11}{125}-\frac{1}{2}+\frac{1}{2}\)

\(=\frac{11}{125}\)

tính từng cái là đc

cau a em

`2022xx2023-2022xx1024+2022`

`=2022xx(2023-1024+1)`

`=2022xx1000`

`=2022000`

a)  6 4 5 − 1 2 3 + 3 4 5 = 6 4 5 − 3 4 5 − 1 2 3 = 3 − 5 3 = 4 3

b)  7 4 9 + 4 7 11 − 3 4 9 = 7 4 9 − 3 4 9 + 4 7 11 = 4 + 4 7 11 = 8 7 11

a)  5 9 . 7 13 + 5 9 . 9 13 − 5 9 . 3 13 = 5 9 7 13 + 9 13 − 3 13 = 5 9

b)  4 19 . − 3 7 + − 3 7 . 15 19 + 5 7 = − 3 7 4 19 + 15 19 + 5 7 = − 3 7 + 5 7 = 2 7

a)2.18.14+3.17.12+4.69.9
=(2.18).14+(12.3).17+(4.9).69
=36.14+36.17+36.69
=36.(14+17+69)
=36.100
=3600

b)1+(-3)+5+(-7)+9+(-11)+13+(-15)
=[1+(-3)]+[5+(-7)]+[9+(-11)]+[13+(-15)]
=(-2)+(-2)+(-2)+(-2)
=(-8)