The value of y is 12 and the values of AC and DC are 12 and 24
The given parameters are:
AD = 12
AC = 4y - 36
This means that
AC = DC
So, we have:
4y - 36 = 12
Evaluate the sum
4y = 48
Divide by 4
y = 12
Substitute y = 12 in AC = 4y - 36
AC = 4 * 12 - 36
Evaluate
AC = 12
The value of DC is
DC = AC + AD
This gives
DC = 12 + 12 = 24
Hence, the value of y is 12 and the values of AC and DC are 12 and 24
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