Question 1174185
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Use two equations in two variables to solve the application. ---- ----
A rectangle is 3 times as long as it is wide, and its perimeter is 56 centimeters. Find its dimensions.
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L length
w width


{{{system(L=3w,w+L=56/2)}}}


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{{{w+3w=28}}}
{{{4w=4*7}}}
{{{w=7}}}

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