exam Maths Puzzle Numerical Ability

2x^2-x-3/3x^2+7x+4 divided by 3x^2-11x-20/4x^2-9....multiply the fractions.

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exam Other Question

0.03c-0.1 = 1.4c+9
0.03c-1.4c=9+0.1
-1.37c=9.1
c=9.1/-1.37 c=-9.1/1.37
WHAT IS THE DIFFERENCE OF 8 1/2 AND 3 3/4 WRITTEN IN SIMPLEST TERMS?