Answer:
1. The items in column A are called expressions and they don't have an equal sign, while the items in column B are called equation and they have equal sign.
2. equal sign or equal symbol
3. column A: 3x+1 and 5x+2
column B: 3x+1=7 and 5x+2=27
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Answers & Comments
Answer:
1. The items in column A are called expressions and they don't have an equal sign, while the items in column B are called equation and they have equal sign.
2. equal sign or equal symbol
3. column A: 3x+1 and 5x+2
column B: 3x+1=7 and 5x+2=27