Alice

Alice spent 5/11 of her money on a backpack. She has 42 dollars left. How much was her backpack?

Final Answer:

b =  35

Step-by-step explanation:


x - b = 42
b = 5/11 x

x - b = 42
b = 5/11·x

b-x = -42
11b-5x = 0

Pivot: Row 1 ↔ Row 2
11b-5x = 0
b-x = -42

Row 2 - 1/11 · Row 1 → Row 2
11b-5x = 0
-0.55x = -42


x = -42/-0.54545455 = 77
b = 0+5x/11 = 0+5 · 77/11 = 35

b = 35
x = 77

Our linear equations calculator calculates it.



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You need to know the following knowledge to solve this word math problem:

algebranumbersUnits of physical quantitiesGrade of the word problem

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