Question

Alguém me ajuda nessas expressões

Answer 1

7/3+√49/√64÷21/8-(3/8×16/9)²
7/3+7/8÷8/21-(1/5×16/3)²
7/3+1/3-(16/15)²
7/3+1/3+256/225
525+75-256/225
344/225!!!

(1/4÷9/32-10/9×2/5)³×√81/256
(1/4×32/9-2/9×2)³×9/16
(8/9-4/9)³×9/16
(4/9)³×9/16
64/729×9/16
4/81!!!