\(=\dfrac{5}{4}\cdot\dfrac{1}{4}:\left(\dfrac{21}{16}-\dfrac{24}{16}\right)+1=\dfrac{5}{16}\cdot\dfrac{16}{-3}+1=\dfrac{-5}{3}+1=-\dfrac{2}{3}\)

\(125\%\cdot\left(-\dfrac{1}{2}\right)^2:\left(1\dfrac{5}{16}-1,5\right)+2018^0\)
\(=\dfrac{5}{4}\cdot\dfrac{1}{4}:\left(\dfrac{21}{16}-\dfrac{3}{2}\right)+1\)
\(=\dfrac{5}{16}:\left(-\dfrac{3}{16}\right)+1\)
\(=\dfrac{5}{16}\cdot\left(-\dfrac{16}{3}\right)+1\)
\(=-\dfrac{5}{3}+1\)
\(=-\dfrac{5}{3}+\dfrac{3}{3}\)
\(=-\dfrac{2}{3}\)

`125%*( (-1)/2 )^2 :(1 5/16 -1,5 )+2018^0`

`=1,25 * 1/4 :(21/16-3/2)+1`

`=1,25*1/4:(21/16-24/16)+1`

`=1,25*1/4:(-3)/16+1`

`=5/16*16/(-3)+1`

`=-5/3+1`

`=-5/3+3/3`

`=-2/3`

ngu

a: \(=\dfrac{2}{3}+\dfrac{1}{3}\cdot\dfrac{-8+15}{18}:17\)

\(=\dfrac{2}{3}+\dfrac{1}{3}\cdot\dfrac{7}{18}\cdot\dfrac{1}{17}\)

\(=\dfrac{619}{918}\)

b: \(=\left(3-7+\dfrac{1}{4}\right)\cdot\left(4-\dfrac{31}{6}+\dfrac{9}{4}\right)\)

\(=\dfrac{-15}{4}\cdot\dfrac{13}{12}=\dfrac{-195}{48}=\dfrac{-65}{16}\)

c: \(=\dfrac{3}{4}-\dfrac{3}{2}+\dfrac{1}{2}\cdot\dfrac{12}{5}-\dfrac{1}{4}\)

\(=\dfrac{1}{2}-\dfrac{3}{2}+\dfrac{6}{5}=\dfrac{6}{5}-1=\dfrac{1}{5}\)

d: \(=\dfrac{5}{4}\cdot\dfrac{1}{4}:\left(\dfrac{21}{16}-\dfrac{3}{2}\right)\)

\(=\dfrac{5}{16}:\dfrac{-3}{16}=\dfrac{-5}{3}\)

đăng ít thôi bạn đăng nhiều thế mới nhìn vào đã thấy chóng mặt huống chi là giải

2: \(=16\cdot38-16\cdot2-38\cdot16+38=-32+38=6\)

3: \(=6-7+4-3=10-10=0\)

4: \(=-125\left(26-36\right)=-125\cdot\left(-10\right)=1250\)

5: \(=5^3-5^3=0\)

6: \(=24\left(-125+225\right)=100\cdot24=2400\)

7: =21(135+65)-200

=200*21-200

=200*20=4000

8: =42+58-19+19=100