Question 969223
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Not sure what you mean by 3 steps, but you can say


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ (9\ +\ 11)\ -\ (7\ +\ 13)\ +\ (1\times 5\times 3)\ +\ 15\ =\ 30]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \