Question

bài1Tính giá trị biểu thức

a,(75,6-21,7):4+22,82x2                      b,21,56 :( 75,6-65,8 )-0,354:2

 

 

Answer 1

\(a.\left(75,6-21,7\right):4+22,82\times2=53,9:4+45,64=13,475+45,64=59,115\)

\(b.21,56:\left(75,6-65,8\right)-0,354:2=21,56:9,8-0,117=2,2-0,117=2,083\)

Answer 2

a, (75,6 - 21,7) : 4 + 22,82 $\times$ 2 = 53,9 : 4 + 45,64 = 13,475 + 45,64 = 59,115;

b, 21,56 : (75,6 - 65,8) - 0,354 : 2 = 21,56 : 9,8 - 0,177 = 2,2 - 0,177 = 2,023.

Answer 3

\(a,\left(75,6-21,7\right):4+22,82\times2\\ =53,9:4+45,64\\ =13,475+45,64\\ =59,115\\ b,21,56:\left(75,6-65,8\right)-0,354:2\\ =21,56:9,8-0,177\\ =2,2-0,177\\ =2,203\)