Question

 Giải thành các bước

Answer 1

= 0.75 - ( 7/3 + 3/4) + 3². (-1/9)

= 3/4 - 37/12 + 9 . (-1/9)

= 3/4 - 37/12 + -1

= -10/3

Answer 2

thanks

Answer 3

\(0,75-\left(\dfrac{7}{3}+0,75\right)+9.\left(-\dfrac{1}{9}\right)\)

\(\dfrac{3}{4}-\left(\dfrac{7}{3}+\dfrac{3}{4}\right)+\dfrac{9}{1}.\left(-\dfrac{1}{9}\right)\)

\(\dfrac{3}{4}-\left(\dfrac{28}{12}+\dfrac{9}{12}\right)+\left(-\dfrac{9}{9}\right)\)

\(\dfrac{3}{4}-\dfrac{37}{12}+\left(-1\right)\)

\(\dfrac{9}{12}-\dfrac{37}{12}+\left(-1\right)\)

\(-\dfrac{28}{12}+\left(-\dfrac{12}{12}\right)\)

\(-\dfrac{40}{12}\)