book Maths Puzzle Numerical Ability

Use the distributive property to remove the parentheses in each express. then simply by combining like term.

7 (4w -3) -25w

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book Other Question

The angles of a polygon add up to 2700 degrees. How many sides does the polygon have? John and Harvey sold widgets, Harvey sold 2� times as many widgets as John. If the difference in their sales was 87 units. How many widgets did each of them sell?