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1/2w+2
[10-(4*2)]*3
Find the value of the expression.
"Evaluate the expression" means replace all the letters with their numericalvalues, and then see what number the whole expression works out to be.
You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.