Rewrite expression with parenthesis to equal. the given value of 3x4-1+2

(3x4)-1+2 3x4=12 and 1+2=3 so 3-12=9 hope I helped

(3x4)-(1-2)??
How do you mean exactly?

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's

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