suxy16
21.10.2020 •
Mathematics
Two times a number is four times that number minus a negative eighteen
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Ответ:
-9
Step-by-step explanation:
the number is x
2x = 4x - - 18
2x = 4x + 18
-2x = 18
x = -9
Ответ:
yes it is possible.
for example: +7-7=0