Respuesta :

Answer:x=9

Step-by-step explanation:so this is a isosceles triangle so that means the two sides are equal so set up the equation as 3x-7=20. And by moving the 7 over it will be 3x=27 and then you want you separate the x and to do that you have to divide x and 27 by 3 and you answer is x = 9

Amphitrite1040

Hey there!


3x - 7 = 20°


ADD 7 to BOTH SIDES

3x - 7 + 7 = 20 + 7

CANCEL out: -7 + 7 because it give you 0

KEEP: 20 + 7 because it help solve for the x-value


NEW EQUATION: 3x = 20 + 7


SIMPLIFY IT!


3x = 27


DIVIDE 3 to BOTH SIDES

3x/3 = 27/3

CANCEL out: 3/3 because it give you 1

KEEP: 27/3 because it help solve for the x-value


NEW EQUATION: x = 27/3


SIMPLIFY IT!

x = 9



Therefore, your answer is: x = 9



Good luck on your assignment & enjoy your day!



~Amphitrite1040:)

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