13 + 20 = ( ) - 33, 12 x 2 = ( ) - 24, 14 - 10 = ( ) - 4, 9 x 17 = ( ) - 153, 有一天巧莓數學考了100，決定買個甜甜圈獎勵自己，巧克力口味的甜甜圈39元，草莓口味的甜甜圈26元，巧莓選不出來，於是決定各買一個，巧莓總共花了多少錢? - 65元,

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