Trinette Carruthers help students use the plus sign to write an addition expression. Trinette Carruthers and her daughter help students use the plus sign to write an addition expression.
In algebra, letters are used when numbers are not known. Algebraic terms, such as \(2s\) or \(8y\), leave the multiplication signs out. So rather than \(2 \times s\), write \(2s\), and rather than \(8 ...
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