rules to find :- 1 All non zeroes number are significant
2  if zero proceeding the decimal point also work as non zero figure
3 zero are following the decimal point and proceeding the first non zero digit
4 Zero in between 2 non zero digits are also significant 
5 if 1 zero follow the decimal point 
790  :-    2 significant figures
0.0391 :-  3 significant figures ( follow 3 rule)
81.05  :- 4 significant figures  ( rule 4)
0.000001 :-   1 significant figure 
8546 :-        4 significant figures 
79.0 :-         3 significant   ( rule 5)
 
        
             
        
        
        
Hey is there a way you could send a photo of the equation
        
             
        
        
        
<span>The individual factors for each integer along with the common factors and greatest common factor
will be shown. Factors of 18 are 1, 2, 3, 6, 9, 18. Factors of 36 are
1, 2, 3, 4, 6, 9, 12, 18, 36. Factors of 48 are 1, 2, 3, 4, 6, 8, 12,
16, 24, 48.</span>
        
                    
             
        
        
        
Let
x--------->  the larger number
y---------> the smaller number
we know that
x+y=148------> equation 1
x=3y-2------> equation 2
substitute 2 in 1
[3y-2]+y=148--------> 4y=150---------> y=150/4------> y=37.5
x=3y-2----> x=3*37.5-2-----> x=110.5
the answer is
the larger number is 110.5
the smaller number is 37.5