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7. the perimeter of a triangle is 80cm. write and simplify an equation to solve for x.
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7 The Perimeter Of A Triangle Is 80cm Write And Simplify An Equation To Solve For X class=

Sagot :

Answer:

X = 18

Step-by-step explanation:

(x+3)+(x+3)+(3x-16) = 80

5x-10 = 80

5x = 80+10

5x = 90

x = 90/5

x = 18

hope that helped!

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