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Lelu [443]
2 years ago
6

What is the difference 7/78 - 3 1/4=

Mathematics
2 answers:
ZanzabumX [31]2 years ago
3 0
     <span> here
7 7/8
= [ (8*7) + 7 ] / 8
= (56 + 7) / 8
=63 / 8

similarly,
3 1/4
=[ (4*3) + 1] / 4
= (12 + 1) / 4
= 13/4

----------------------------
now put the values
7 7/8 - 3 1/4
= 63/8 - 13/4
here, take LCM of 8 & 4 which is 8.
now,
[ (1*63) - (2 * 13) ] / 8
= (63 - 26) / 8
= 37/8
= 4 5/8........................[ here, divide 37 by 8 which gives reminder as 5 and divisible value as 4 ]</span>
Keith_Richards [23]2 years ago
3 0

Answer:

The difference of 7/78 - 3 1/4 is -493/156.

Step-by-step explanation:

Now consider the information

\frac{7}{78}- 3 \frac{1}{4}

Here 3 1/4 is a mixed fraction which can be written as:

3\frac{1}{4}=\frac{13}{4}

Now subtract them as shown:

\frac{7}{78}- frac{13}{4}

\frac{14-507}{156}

\frac{-493}{156}

Hence, the difference of 7/78 - 3 1/4 is -493/156.

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