thelonewolf5020
11.07.2019 •
Mathematics
Explain how to verify that 3(2x + 5) = 9 + 3x and x = –2 are equivalent equations.
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Ответ:
3 times (2x + 5) is 6x + 15.
6x + 15 = 9 + 3x.
Group by like terms. 6 = -3x
Divide to get x by itself. 6/-3 = -2
Thus -2 = x
Ответ: