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# Help

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I need help with algebra

If x=3 and n=5, solve the follow question using the Order of Operations

x*(n+x+n/n) + xn - n = ?

PsychoBaker  Jun 4, 2017
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#1
+1

Evaluate x (n + x + n/n) + x n - n where x = 3 and n = 5:
x (n + x + n/n) + x n - n = 3 (5 + 3 + 5/5) + 3×5 - 5

5/5 = 1:
3 (5 + 3 + 1) + 3×5 - 5

5 + 3 + 1 = 9:
3×9 + 3×5 - 5

3×9 = 27:
27 + 3×5 - 5

3×5 = 15:
27 + 15 - 5

Guest Jun 4, 2017
#2
+6810
+2

$$x\cdot(n+x+\dfrac{n}{n})+ xn - n\\ = 3\cdot(5+3+5\div 5)+3\times 5 - 5\\ =3\cdot 9 + 15 - 5\\ = 27 + 15 - 5\\ = 42 - 5\\ = 37$$

MaxWong  Jun 4, 2017
#3
+178
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@MaxWong Thank you for explaining and simplifying the equation so I could understand it better! :D

PsychoBaker  Jun 4, 2017

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