So twice a number means 2 x 2x 2x. The sum (use plus symbol) of twice a number and 3 can be written as 2 x + 3 2x+3 2x+3. Reply
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So twice a number means 2 x 2x 2x. The sum (use plus symbol) of twice a number and 3 can be written as 2 x + 3 2x+3 2x+3.