To solve for y, you must isolate the variable so that you have y set equal to your solution. To do this, divide both sides by 0.6. This would look like this: 10.3/0.6=0.6y/0.6
When 0.6 and 0.6 cancel out and you are left with y on one side and then when you divide 10.3/0.6, you result in a non-terminating decimal, which means the decimal goes on forever. To have a more accurate solution, convert 10.3/0.6 to a more simplified fraction. Since the numerator and denominator are decimals, you can multiply the numerator and denominator by 10 to move the decimal to the right one in order to make the numbers whole. This would result in 103/6. When you convert this to an improper fraction, you get the fraction 17 1/6.