5 पेनांची व 4 वह्यांची किंमत 74 असेल आहे तर 4 पेनांची व 5 वह्यांची किंमत 70 रुपये असेल तर 1 पेन व 1 वही यांची किंमत किती होईल ?
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∴ price of 5 books = 5(x + 4) = (5x) + (5 × 4) rupees = 5x + 20 rupees (use distributive property to solve the bracket 5(x+4) ). ∴ price of 3 pencils = 3(x-2) = 3x-3 × 2 rupees = 3x-6 rupees (use distributive property to solve the bracket 3(x-2) )
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