Asked by Nella
Think of a number, double it and add 7. I take the same number and subtract it from 19. The two answers are the same. What is the number?
Answers
Answered by
Anonymous
2 x + 7 = 19 - x
3 x + 7 = 19
3 x = 12
x = 4
3 x + 7 = 19
3 x = 12
x = 4
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