SOLUTION: How do I figure out what is seven-tenths of 5/7?

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Question 740887: How do I figure out what is seven-tenths of 5/7?
Found 2 solutions by MathLover1, josmiceli:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

seven-tenths 7%2F10 of 5%2F7 will be

%287%2F10%29%285%2F7%29

%28cross%287%291%2Fcross%2810%292%29%28cross%285%291%2Fcross%287%291%29

1%2F2

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the two fractions
+%287%2F10%29%2A%285%2F7%29+
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When you have fractions that are being
multiplied, you can exchange numerators
and you can exchange denominators
---------------
+%287%2F10%29%2A%285%2F7%29++=+%285%2F10%29%2A%287%2F7%29+
Note that +7%2F7+=+1+, so
+%285%2F10%29%2A%287%2F7%29++=+5%2F10+
+5%2F10+=+1%2F2+ answer
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You could also have done it this way:
First multiply both numerators, then
multiply the denominators. Divide
numerators by denominators.
+%287%2F10%29%2A%285%2F7%29+=+%28+7%2A5+%29+%2F+%28+10%2A7+%29+=+35+%2F+70+
+35%2F70+=+1%2F2+ same answer