Question

how to substract 10 % from 5×10^ 21​

Answer 1

1. solve the equation
2. find the value of 10% of it.
3. subtract the (2nd equation's answer) 10% from the first equation's answer.

Answer 2

Answer:

5e+20

Step-by-step explanation:

Since percentages are simply division of 100, we know 10% of something is the same as multiplying it by 0.1 or dividing it by 10, so by using that knowledge we simply take the equation provided and add onto it, getting 5x10^21 x 0.1 .

using PEMDAS as an ordering system to solve the equation (first parenthesis, then exponents, then multiplication or division from left to right, and then addition or subtraction from left to right) , you would do 10^21, getting 1e+21, and multiplying it by 5, getting 5e+21. you would then multiply it by 0.1, getting 5e+20.