What is the value of x in the equation 8x – 2y = 48, when y = 4?

1 answer

just replace y with 4, and you have
8x - 2*4 = 48
8x - 8 = 48
8x = 56
x = 7

check: 8*7 - 2*4 = 56-8 = 48
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