2x +1 = 7 -Z | -1 = [?] = 2x 3
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Answer:
See explanation.
Step-by-step explanation:
An expression is a <u>set of terms that are combined using addition, subtraction, multiplication, or division.</u> The following are examples of expressions:
Note: expressions do not equal anything.
In contrast, equations are <u>expressions that equal at least one term.</u> The following are examples of equations:
Note: equations <u>do</u> equal a term, as shown in the examples.