I need to make these into algebraic expressions or equations:5 less than the product of 10 and c, 14 more than 6 times t, the sum of x and y is 18, A number minus 12 is 17

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5 less than the product of 10 and c

-5 + 10*c = 10c - 5

14 more than 6 times t

+14 + 6*t = 6t + 14

The sum of x and y is 18

x + y = 18

A number minus 12 is 17

n - 12 = 17

In an electrical circuit, the current (I) and resistance (R) are directly proportional through the equation, 
                               V = I x R
where V is the potential difference. Having a constant potential difference for the two circuits, 
                           (2 A) x (770 ohms) = (I) x (808 ohms)
Solving for I gives I = 1.906 A.