Mathematics
Allison:

Stupid algebra again

1 year ago
Allison:

3/5 + 1/2

1 year ago

You can’t add fractions that have different denominators.

1 year ago

Do you know what the denominator is?

1 year ago
Allison:

Yes the bottom number

1 year ago
Allison:

I got it. •-•

1 year ago

You sure?

1 year ago
Allison:

Yes don’t stalk my DMs…

1 year ago

?

1 year ago
Allison:

I got help :D

1 year ago

Okay

1 year ago

3/5 + 1/2 You would find what is called the least common denominator. This is also the least common multiple. A multiple is a number multiplied by an integer (whole number). You need to find a multiple that both denominators share. Thus, least common denominator. 5 times 2 = 10 2 times 5 = 10 We must alter the form of these fractions, but retain their value. Do so by multiplying by 1. $\frac{ 3 }{ 5 } \times \frac{ 2 }{ 2} = \frac{ 6 }{ 10 }$ $\frac{ 1 }{ 2 } \times \frac{ 5 }{ 5 } = \frac{ 5 }{ 10 }$ Similar to in Algebra, 'what you do to one side, do to the other." What you do to the bottom, do to the top. This keeps the value the same, and also 5/5 = 1 and 2/2 = 1. Multiply by 1 means the number stays the same $\frac{ 6 }{10 } + \frac{ 5 }{ 10 } = \frac{ 11 }{ 10 }$

1 year ago
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