Answer:
Step-by-step explanation:
8x - 2y = 48
Put y = 4 to the equation:
8x - 2(4) = 48
8x - 8 = 48 add 8 to both sides
8x - 8 + 8 = 48 + 8
8x = 56 divide both sides by 8
8x/8 = 56/8
x = 7
