Solve
v/9 - v/ 21 +1/9
Answer is 0
Is this right
You mean "v" is an unknown? You cant solve an unknown without an equation.
To solve the expression v/9 - v/21 + 1/9, you can follow these steps:
Step 1: Find the common denominator for the fractions. In this case, the common denominator is 63 because it is a multiple of both 9 and 21.
Step 2: Rewrite each fraction with the common denominator:
v/9 becomes (7v)/63 (multiply the numerator and denominator by 7 to get 63 in the denominator)
v/21 becomes (3v)/63 (multiply the numerator and denominator by 3 to get 63 in the denominator)
1/9 remains the same, as its denominator is already 9.
Step 3: Combine the fractions:
(7v)/63 - (3v)/63 + 1/9
Now that the denominators are the same, we can combine the numerators:
((7v) - (3v) + 1) / 63
Simplifying further:
(4v + 1) / 63
Now, to check if the answer is 0, set the numerator equal to 0 and solve for v:
4v + 1 = 0
4v = -1
v = -1/4
Since v = -1/4, the answer to the expression is not 0. So, it seems there might be a mistake or misunderstanding in the solution provided.