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OpenStudy (izzy18970):
I need help with the steps
OpenStudy (izzy18970):
no
OpenStudy (anonymous):
add on the left, then flip it
OpenStudy (anonymous):
what is \[\frac{1}{7}+\frac{1}{10}\]?
OpenStudy (izzy18970):
you have to find the least common denominator right?
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OpenStudy (izzy18970):
70
OpenStudy (anonymous):
i guess but here it is just 70 for the lcd
alones (alones):
17/70=1/x
\ 1: Cross-multiply.
17/70=1/x
17*x=(1)*(70)
17x=70
2: Divide both sides by 17.
17x/17=70/17
x=70/17
@satellite73 did i solve this right?? ;3
OpenStudy (anonymous):
\[\frac{1}{a}+\frac{1}{b}=\frac{a+b}{a\times b}\]
OpenStudy (anonymous):
@AloneS yes you did , except for the words "cross multiply" which do not apply
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alones (alones):
Oh my bad xP Thank you for the correction<3
OpenStudy (izzy18970):
so the answer is 4.1 ?
OpenStudy (izzy18970):
4.12
OpenStudy (anonymous):
the answer is not a decimal, it is fraction
OpenStudy (izzy18970):
oh ok thank you
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OpenStudy (anonymous):
\[\frac{1}{7}+\frac{1}{10}=\frac{10+7}{10\times 7}=\frac{17}{70}\] if \[\frac{17}{70}=\frac{1}{x}\] then \[\frac{70}{17}=x\]