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Simplify each expression \[\frac{ -2 }{ 5 } + \frac{ -1 }{ 2 }\]
@manishsatywali if u actually pay attention, u can see twitch is typing so how about u have patience and wait for twitch to post the question.
thnkyou ^-^
@mikaa_toxica13 srry fr that
no worys
Are you allowed to convert this into a decimal? I know in some situations you should and shouldn't.
I dont think so because it just say simplify
and im pretty sure i should come up with a fraction
Eh I normally always convert them into decimals, personally, so I probably shouldn't help.
so can anyone help me
You are adding two fractions with different denominators. You first need to find the least common denominator.
What is the LCD of 5 and 2?
okay would it be 10
Good. Now you need to convert each fraction to a fraction with 10 as its denominator.
The first fraction has a 5 as its denominator. What do you multiply 5 by to get 10?
\[\frac{ -2 }{ 5 }+\frac{ -1 }{ 2 }\] is the same as \[\frac{ -2 }{ 5 }-\frac{ 1 }{ 2 }\] Find a common denominator by multiplying the 1/2 by 5/5 and multiplying -2/5 by 2/2: \[\frac{ -2 }{ 5 }(\frac{ 2 }{ 2 })-\frac{ 1 }{ 2 }(\frac{ 5 }{ 5 })=\frac{ -4 }{ 10 }-\frac{ 5 }{ 10 }\] Subtract the numerators since you have a common denominator, giving you : \[\frac{ -9 }{ 10 }\]
so -2/10 + -1/10
oh naw 2
The first fraction becomes (-2/5) * (2/2) = -4/10
-5/10
-9/10
The second fraction has a 2 for the denominator, so you need to multiply it by 5/5 -1/2 * 5/5 = -5/10 Now with the common denmominator combine them together. -5/10 + -4/10 = -9/10
That's it, you got it!
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