6.4 - y = 6 2/5 what is y?

y = 0

thank you

To find the value of y in the equation 6.4 - y = 6 2/5, we need to isolate y on one side of the equation.

First, let's convert the mixed number 6 2/5 into a fraction. We can do this by multiplying the whole number 6 by the denominator of the fraction (5) and then adding the numerator (2). So, 6 2/5 is equivalent to (6 * 5 + 2)/5 = 32/5.

Now, we can rewrite the equation as 6.4 - y = 32/5.

To isolate y, we need to get rid of the 6.4 on the left side of the equation. We can do this by subtracting 6.4 from both sides:

6.4 - y - 6.4 = 32/5 - 6.4.

This simplifies to -y = 32/5 - 6.4.

Next, we need to combine the fractions on the right side of the equation. To do this, we need a common denominator. The common denominator between 5 and 10 (the denominator of 6.4) is 10.

So, we can rewrite the equation as -y = (32/5) - (64/10).

Now, let's subtract the fractions:

-y = (32/5) - (64/10) = (32/5) - (32/5) = 0.

Finally, to solve for y, we multiply both sides of the equation by -1:

y = -0.

Therefore, the value of y is 0.