Both equations have as the left hand side.
Then, in a situation like
we can deduce , since they both equal
So, we can set up the equation
The solutions are
From the second equation we know that y is one more than x, so we have
If you wanted to write 4/10 as a decimal it would be .4
Simple enough:
Solve for V:
V/2 + 6 = 14
Put each term in V/2 + 6 over the common denominator 2: V/2 + 6 = V/2 + 12/2:
V/2 + 12/2 = 14
V/2 + 12/2 = (V + 12)/2:
(V + 12)/2 = 14
Multiply both sides of (V + 12)/2 = 14 by 2:
(2 (V + 12))/2 = 2×14
(2 (V + 12))/2 = 2/2×(V + 12) = V + 12:
V + 12 = 2×14
2×14 = 28:
V + 12 = 28
Subtract 12 from both sides:
V + (12 - 12) = 28 - 12
12 - 12 = 0:
V = 28 - 12
28 - 12 = 16:
Answer: V = 16