exam Maths Puzzle Numerical Ability

solve for x
3(x+4)=18

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exam Other Question

-x2 -5x- 6, x= -3 and x= -2 the length of a rectangle is 7 feet more than width. if the length were decreased by 3 feet and the width were increased by 2 feet, the perimeter would be 32 feet. Find the length of the original rectangle.