The first step in simplifying the expression: (1.8 x 10^5) - (2.6 x 10^3)
a
Addition and subtraction requires the terms to be "like terms" with the same power of the base 10, so you would need to change the second number to (2600 x 10^5).
b
Addition and subtraction requires the terms to be "like terms" with the same power of the base 10, so you would need to change the second number to (0.026 x 10^5).
c
Addition and subtraction do not require any changes, so you would just subtract (2.6 - 1.8) and (10^(5-3))
d
Addition and subtraction do not require any changes, so you would just subtract (1.8 - 2.6) and (10^(5-3))
