So with more than 1 pair of parentheses, you must work from the inside and make your way outside.
Firstly, solve 6 + 4: [tex]10\times [10\div 2][/tex]
Next, solve 10 ÷ 2: [tex]10\times 5[/tex]
Lastly, solve 10 × 5, and your answer will be 50.