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ivolga24 [154]
3 years ago
11

If x=1/4 and y=3/7, evaluate the following expression: 7x−4y

Mathematics
1 answer:
iVinArrow [24]3 years ago
3 0

Answer:

1/28

Step-by-step explanation:

The expression is 7x-4y

  • x = 1/4
  • y= 3/7

Replace x by 1/4 and y by 3/7

  • 7x-4y
  • 7*(\frac{1}{4}) - 4*(\frac{3}{7})         multiply 1 by 7 and 4 by 3
  • \frac{7}{4} - \frac{12}{7}              multiply 7/4 by 7 and 12/7 ny 4 to get the same denominator
  • \frac{49-48}{28}
  • 1/28
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