Hey, there!
To answer this question we have to do PEMDAS
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
8.4(10) = 84
84 - 6 = 78
(78) + (6.5 × 10 - 6)
6.5(10) = 65
65 - 6 = 59
78 + 59 = 137
Your answer: 137
Good luck on your assignment and enjoy your day!
~MeIsKaitlyn:)
