A student bought 15 stamps, some were 50 yen stamps and some were 80 yen stamps. She paid 960 yen.

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Ответ:

alexagyemang440

15.04.2021

Mathematics

Step-by-step explanation:

the two angles here are vertical angles, meaning they are congruent

(6x-3) = (2x+13)

first we can subtract 2x from both sides: 4x-3 = 13

then we add 3 to both sides: 4x = 16

lastly, we follow the Multiplicatin Property Of Equality and divide both sides of the equation by 4: x=4

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