Each of two congruent sides of an isosceles triangle is 2n + 7 and the third side is 3n. write two equivalent expressions

each of two congruent sides of an isosceles triangle is 2n + 7 and the third side is 3n. write two equivalent expressions for the perimeter, also combine like terms to find the perimeter

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This Post Has 4 Comments

  1. So one way we can do this is- 

    2(2n+7)+3n=

    4n+14+3n=

    7n+14

    Another simpler way possible is-

    2n+7+2n+7+3n=

    RE-ORDER

    2n+2n+3n+7+7=

    COMBINE LIKE TERMS

    7n+14

  2. The equations could be
    (2n+7)+(2n+7)+3n
    or 2(2n+7)+3n
    When we combined like terms it could be
    4n+14+3n

    2(2n+7)+2(3n) is incorrect because in a triangle there are 3 sides, the measure of two of the sides are 2(2n+7) and the third side is 3n however, he/she put "2(3n)" which would show there are 2 sides with the measure 3n

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