43 x 53 + 47 x 196 - 47 x 52

= 43 x 53 + 47 x ( 196 - 52 )

= 43 x 53 + 47 x 144 _{-> Hết thuận tiện rồi bạn ơi ( kiểm tra lại bài thử nha ).}

bruh

= (-56) x[(-47)-54+1]

= (-56) x(-100)

=56x100

=5600

\(63+27.97+18=63+18+27.97=81++27.97=27.3+27.97=27.\left(3+97\right)=27.100=2700\)

2700

\(42.53+47\left(156+114\right)\)

\(42.53+47.270\)

\(hixx\)\(\text{quên ùi}\)

hhhhhhhhhhhhhhhhh

42 x 53 + 47 x 156 + 47 x 114

= 42 x 53 + 47 x ( 156 + 114 )

= 42 x 53 + 47 x 270

= 2226 + 12690

= 14916

35 x 36 + 36 x 63 + 36 : 1/2​

= 35 x 36 + 36 x 63 + 36 x 2

= 36 x ( 35 + 63 + 2 )

= 36 x 100

= 3 600

/HT\

=35x36+36x63+36x2 (nếu bn ko hiểu tại sao mik nhân 2 thì: 36 : 1/2 = 36 x 2/1= 36 x2) =35x(35+63+2) = 35x100=3500

1. \(=\left(-23+27-13+47-23+37-13+47\right):45\)\(=\left(-23.2-13.2+27.2+47.2\right):45=\left(-72+148\right):45=\frac{76}{45}\)
2. \(=59:\left(111-522+115-23\right)=59:\left(-319\right)\)

 \(\frac{21}{11}\times\frac{22}{17}\times\frac{68}{63}\)

=\(\frac{21}{1}\times\frac{2}{17}\times\frac{68}{63}\)

= 21 x \(\frac{8}{63}\)

=\(\frac{8}{3}\)

\(165-65:5+28.3=165-13+28.3\)

\(=165-13+84=152+84\)

\(=236\)

\(\left(315:5+47\right).2+21=\left(63+47\right).2+21\)

\(=110.2+21=220+21\)

\(=241\)

\(\frac{63.\left(19191919+88888\right)}{212121+99999}=\frac{63.\left(19191919+18181+70707\right)}{21212121+97979+2020}=\frac{63.\left(19200000+70707\right)}{21300000+2020}\)\(=\frac{63.19270707}{21302020}\)