Answer:
Simplifying
8x + -4y = 24
Solving
8x + -4y = 24
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '4y' to each side of the equation.
8x + -4y + 4y = 24 + 4y
Combine like terms: -4y + 4y = 0
8x + 0 = 24 + 4y
8x = 24 + 4y
Divide each side by '8'.
x = 3 + 0.5y
Simplifying
x = 3 + 0.5y
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C) x=4 is the answer
2*4-1=7
8-1=7
Since the percentage is 8/10, we can take it and mutiply it by 10 (8 and 10) to get 80/100. The percentage is 80%.