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Select all of the equations below that are equivalent to:\newline90+n=3990 + n = -39\newlineUse properties of equality.\newlineMulti-select Choices:\newline(A) 90+n13=590 + \frac{n}{13} = -5\newline(B) 90+n3=1590 + \frac{n}{3} = -15\newline(C) 90+n13=390 + \frac{n}{13} = -3\newline(D) 90+n3=1390 + \frac{n}{-3} = 13

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Q. Select all of the equations below that are equivalent to:\newline90+n=3990 + n = -39\newlineUse properties of equality.\newlineMulti-select Choices:\newline(A) 90+n13=590 + \frac{n}{13} = -5\newline(B) 90+n3=1590 + \frac{n}{3} = -15\newline(C) 90+n13=390 + \frac{n}{13} = -3\newline(D) 90+n3=1390 + \frac{n}{-3} = 13
  1. Simplify equation to find nn: Step 11: Simplify the original equation to find nn.\newlineOriginal equation: 90+n=3990 + n = -39\newlineSubtract 9090 from both sides to isolate nn: n=3990n = -39 - 90\newlineCalculation: n=129n = -129
  2. Check choices with n=129n=-129: Step 22: Check each choice by substituting n=129n = -129 and simplifying.\newline(A) Substitute in 90+n13=590 + \frac{n}{13} = -5: 90+(12913)=590 + (\frac{-129}{13}) = -5\newlineCalculation: 909.923=590 - 9.923 = -5

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