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30 January, 14:20

a triangle has the following side lengths: x-2, x, and 3x+1. another triangle has the following side lengths: 2x-5, x+4, 6x-7. of the perimeters of the two triangles are equal, what is x?

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  1. 30 January, 15:51
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    Perimeter is the addition of all the sides

    x-2+x+3x+1=2x-5+x+4+6x-7; since their perimeters are equal

    5x-1=9x-8

    collect the like terms

    -1+8=9x-5x

    7=4x

    x=7/4

    x=1.75
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