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Maths Puzzle
Numerical Ability
(2a-b)^2-(a+2b)^2
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``7.3
5. A farmer has 90 acres available for planting millet and alfalfa. Seed costs $4 per acre for millet and $6 per acre for alfalfa. Labor costs are $20 per acre for
vocabulary and concept check the equations x+3=8and x=5are_____________because they have the same solution.
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