Answer:
Step-by-step explanation:
each line is equivalent
(3.5 x 10¹³ - 1.4 x 10¹²) / 3 x 10⁹
(3.5 x 10¹³ - 0.14 x 10¹³) / 3 x 10⁹
3.36 x 10¹³ / 3 x 10⁹
(3.36 / 3) x 10⁽¹³ ⁻ ⁹⁾
1.12 x 10⁴
