1) the sum of a number and three a) x + 3 b) x - 3 c) 3x 2) three times a certain number decreased by four a) 4 - 3x b) 3x + 4 c) 3x - 4 3) two subtracted from five times a number a) 2 - 5x b) 5x - 2 c) 5x/2 4) a certain number decreased by two a) 2 - x b) x - 2 c) x + 2 5) thrice a number decreased by five a) 3x - 5 b) 5 + 3x c) 3x + 5 6) a number split into three equal parts a) x/3 b) x -3 c) 3x 7) 7. a number reduced from 16 a) x - 16 b) 16 + x c) 16 - x

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