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muminat
3 years ago
15

Please help me with this Thanks

Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
8 0

Answer:

8/40 + 20/40 = 28/40

Step-by-step explanation:

It's about finding the common denominator for the fractions.

we can easily see that 40 is a common denominator for denominators 10 and 4. 20 would work too, but 40 is "instantly seen".

2/10 = (2*4) / (10*4) = 8/40

2/4 = (2*10) / (4*10) = 20/40

8/40 + 20/40 = (8+20) / 40 = 28/40

alexira [117]3 years ago
7 0
So you make them the same common denominator
As you see, 2/10 = 8/40
2/4 = x/40, multiply by 10
2/4 = 20/40
Then add because same denominator
Now you would get:
8/40 + 20/40 = 28/40
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The correct answer is -7.5 years.

Step-by-step explanation:

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6 0
3 years ago
What is the least common multiple of 8 and 10
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3 0
3 years ago
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Oksana_A [137]

Answer:3

x

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x

1

,

y

1

)

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y

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(

x

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a

a

a

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y

−

1

=

3

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x

−

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2

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a

x

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b

y

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c

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a

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b

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c

are integers and  

a

is positive.

a

a

2

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y

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x

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2

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a

a

a

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a

a

a

a

a

2

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a

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a

a

a

a

a

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3

x

a

a

a

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3

x

from both sides

−

3

x

+

2

y

−

2

=

−

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a

a

a

a

a

a

a

a

+

2

a

a

a

+

2

a

a

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