Answer :
Answer:
[tex]8^{2} +9. (\frac{12}{3} . 2) -7 = \\ \\16+9. \frac{24}{3} -7\\ \\16+72 -7 = 81[/tex]
Step-by-step explanation:
In order to resolve correctly this combined calculation, we need to resolve it in order:
First, the operation in parenthesis. Secondly, the powers. Then multiplications and divisions, and after all, substraction and adittion.
So, we first resolve the parenthesis: [tex]\frac{12}{3} . 2 =[/tex]
We multiply 12 by 2, and 3 by 1. The result is [tex]\frac{24}{3}[/tex]
Then we resolve the powers:
[tex]8^{2} = 16[/tex]
Thirdly, we resolve the multiplications:
[tex]9. \frac{24}{3}[/tex] = 72
And finally, the addition:
16 + 72 - 7 = 81