I can't tell what the numbers are on the first one but you got the second one right, and the last one would be different it would be 24 I believe.
Answer:
option A is correct
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<span>x(3x+5)-4(3x+5)
3x^2+5x-12x+20
3x^2-7x+20</span>
1/2 = 4/8
3/8 = 3/8
8 is the common denominator between these two fractions