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The perimeter of the rectangle below is 102 ft. What is the value of X

The Perimeter Of The Rectangle Below Is 102 Ft What Is The Value Of X class=

Sagot :

Perimeter = length of all sides added together

[tex]102=(3x+5)+(3x+5)+(7x-4)+(7x-4)[/tex]

[tex]102=2(3x+5)+2(7x-4)[/tex]

[tex]102=6x+10+14x-8[/tex]

[tex]102=20x+2[/tex]

[tex]102-2=20x[/tex]

[tex]100=20x[/tex]

[tex]x= \frac{100}{20} [/tex]

[tex] \left[\begin{array}{ccc}x=5\end{array}\right] [/tex]

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