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Mademuasel [1]
3 years ago
12

Use the number line to add the fraction. A number line ranging from negative 1 and 3 tenths to positive 9 tenths Drag and drop t

he answer into the box to match the sum. −25+12
Mathematics
2 answers:
Lunna [17]3 years ago
5 0

Answer:

1/10

Step-by-step explanation:

1

Find the Least Common Denominator (LCD) of 25,12\frac{2}{5}, \frac{1}{2}​5​​2​​,​2​​1​​.

Method 1: By Listing Multiples

List out all multiples of each denominator, and find the first common one.

Multiples of 5

: 5, 10, ...

Multiples of 2

: 2, 4, 6, 8, 10, ...

Therefore, the LCD is 101010.

Method 2: By Prime Factors

Since 5,25,25,2 are prime numbers themselves, we simply multiply them to get the LCD.

Therefore, the LCD is 5×2=105\times 2=105×2=10.

LCD = 101010

2

Make the denominators the same as the LCD.

−2×25×2+1×52×5-\frac{2\times 2}{5\times 2}+\frac{1\times 5}{2\times 5}−​5×2​​2×2​​+​2×5​​1×5​​

3

Simplify. Denominators are now the same.

−410+510-\frac{4}{10}+\frac{5}{10}−​10​​4​​+​10​​5​​

4

Join the denominators.

−4+510\frac{-4+5}{10}​10​​−4+5​​

5

Simplify.

110\frac{1}{10}​10​​1​​

zzz [600]3 years ago
3 0

Answer:

1/10

Step-by-step explanation:

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