4g/16 - 3/8 - g/16 = 3/16
Add 3/8 to each side of the equation
4g/16 - g/16 = 3/16 + 3/8
Get a common denominator of 16 on the right side of the equation to add 3/8 to 3/16. To do this multiply the top and bottom of 3/8 by 2
4g/16 - g/16 = 3/16 + 6/16
Combine like terms. (Add the 4g/16 and g/16 together, and add 3/16 and 6/16 together).
3g/16 = 9/16
Now cross multiply. To do this, multiply the denominator of the first fraction (16) by the numerator of the second fraction (9), and set this equal to the numerator of the first fraction (3g) multiplied by the denominator of the second fraction (16).
16(9) = 3g(16)
144 = 48g
Now divide each side of the equation by 48.
g = 3
Hope this helps!
