Answer:
To solve for x in the equation 8x - 2y = 48 when y = 4, we can substitute y = 4 and then solve for x:
8x - 2y = 48
8x - 2(4) = 48 (substituting y = 4)
8x - 8 = 48 (simplifying)
8x = 56 (adding 8 to both sides)
x = 7 (dividing both sides by 8)
Therefore, the value of x in the equation 8x - 2y = 48, when y = 4, is x = 7.