5x=10 x=?, 789789÷9=, -66-(47), If you had 11 boxes of 3 pens in each box, and a friend gave you 7 more boxes, which also has 3 pens in each box, How many pens do you have in total? How many pens would, 6020-4264=, 234+{456+789-(236x2)÷7}.

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