Answer:
Step-by-step explanation:
Given the expression 
, to solve the expression, we need to write both scientific notation to the same power of 10.
The expression above becomes 
. On taking the difference;
The final expression gives the right answer
6.3*10^(-2),
one digit only, then digits ...
Please note that you have to use the reason vert. opp. angles to find x, hope it helps:)
