DUE IN 10 MIN What steps do you need to take to solve -x/2 + 6 = 18
A:Multiply -2. Subtract 6.
B:Subtract 6. Multiply by -2.
C:Divide by -2. Add 6.
D:Add 6. Divide by -2.
Which one is it?

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%