Question

5×4⁻⁷-6×16⁻³
2⁻¹³ tu powinna być kreska ułamkowa

Answer 1

(5×4⁻⁷-6×16⁻³)÷2⁻¹³= [5×(2²)⁻⁷-6×(2⁴)⁻³]÷2⁻¹³=(5×2⁻¹⁴-6×2⁻¹²)×2¹³=5×2⁻¹-6×2¹=2½-12=-9½

Answer 2

5×4⁻⁷-6×16⁻³/ 2⁻¹³= 5*(2²)⁻⁷-6*(2⁴)⁻³/2⁻¹³=5*2⁻¹⁴-6*2⁻¹²/2⁻¹³=
2⁻¹²(5*2⁻²-6)/2⁻¹³=5/4-6 * 2= 19/4*2=19/2=9 i 1/2