Teachers should consider varying the letters used (in addition to x) to represent variables. The symbol 𝑥 is often used to represent multiplication and can be confused with the variable 𝑥. In addition to varying the use of letters as variables, this confusion can be minimized by using parentheses [e.g., 4(𝑥) = 20 or 4𝑥 = 20] or a small dot raised off the line to represent multiplication [4 • 𝑥 = 20].
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