exam Maths Puzzle Numerical Ability

[2c+4.5d]-[-1.5c+1.5d]

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exam Other Question

Factor. -12x^3+36x^2 the cost of 5 boxes of envelopes and boxes of note paper is $25.95. Two boxes of enveiopes and 6 boxes of note paper cost $22.38. Find the cost of each box of envelopes and each box of note paper.