Evaluate the expression: (6.91 x 10⁻²) - (2.4 x 10⁻³)

Answer 1

2.4 x 10⁻³ = 0.24 x 10⁻²

(6.91 x 10⁻²) - (0.24 x 10⁻²) = ?

Answer 2

Evaluate the expression.
6+[10+(91)]2