The sum of two-fifths and f is 1/2

The sum of two-fifths and f is 1/2 can be represented by:

2/5+f=1/2

Then to solve for f an easier way would be turn the fractions into decimals to get:

0.4+f=0.5 (subtract 0.4 from both sides)

f=0.1 or 1/10

Hope this helps ;)

28

step-by-step explanation:

because that's the answer

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,