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March 26, 2017

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theperimeter of a rectangle is32 ft. The lenght is 12 ft longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the lenght and y be the width
write the first equation
2x-2y=
write the second equation
x=y+
what is the lenght ? ft
what is the with? ft

  • algebra - ,

    x = y + 12

    2x + 2y = 32

    Substitute y+12 for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.

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