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18. The diagonals of an isosceles trapezoid are represented by 5x – 42 and 3x + 36. What is the value of x?
d. 109
a 37
b. 39
c. 107​


Sagot :

Answer:

b. 39

Step-by-step explanation:

5x-42=3x+36

5x-3x=36+42

2x=78

2x/2=78/2

x=39