Thực hiện tính: $17,36+42,52 = ?$ 

A. Tính chất giao hoán

B. Tính chất kết hợp

C. Tính chất cộng với $0$

D. Cả A, B, C đều đúng

A. $\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{1\,8\,,\,2\,5\,3}\\{\,\,\,\,\,\,\,\,\,\,\,\,\,7,7}\end{array}}\\\hline{}\end{array}$           

B. $\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{\,\,\, 1\,\,8\,,\,2\,5\,3}\\{7,7\,\,\,\,\,\,\,\,\,}\end{array}}\\\hline{}\end{array}$

C. $\begin{array}{*{20}{c}}{ + \,\,\begin{array}{*{20}{c}}{1\,\,8\,,\,2\,5\,3}\\{\,\,\,7,7\,\,\,\,\,\,\,}\end{array}}\\\hline{}\end{array}$

D. $\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{1\,8\,,\,2\,5\,3}\\{\,\,\,\,\,\,\, 7,7}\end{array}}\\\hline{}\end{array}$

A. $44,39$

B. $55,46$

C. $60,23$

D. $107,93$

A. $x = 52,98$

B. $x = 84,3$

C. $x = 8,43$

D. $x = 12,48$