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28-05-2018
Mathematics

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the perimeter of a triangle is 75 cm. The triangle is isosles now, but if its base were lenghthened by 2 cm and each leg were shortened by 7 cm, it would be equilateral. find the length of the base of the original triangle

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29-05-2018

(-14)+2=(-12)

75-12=63

63/3=21

21-2=19 BASE=19

21+7=28 EACH LEG=28

28+28+19=75

new triangle 21+21+21

19+2=21

28-7=21

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