1. Rewrite the following using a letter.
(1) The sum of a certain number and 3.
(2) The difference obtained by subtracting 11 from another number.
(3) The product of 15 and another number.
(4) Four times a number is 24.
hich oneration murt
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Answer:
- x + 3
- 11 - x
- x × 15
- 4x = 24 .
- .
- .
- .
- .
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