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Answers
Step-by-step explanation:
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GivEn:
- 5/4 = x/16 = 25/x = -15/x
- -3/7 = x/14 = 9/x = -6/x
To find:
- We need to find x in the given question.
Solution:
• Let every unknown numerator/denominator be x.
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« Now, Finding the unknown numerator/denominator,
→ 5/4 = x/16
→ 4x = 16 × 5
→ 4x = 80
→ x = 20
Verification:
→ 5/4 = x/16
→ 20/16 = 5/4
« By cancelling 20/16, We get,
→ 5/4 = 5/4
_
→ 5/4 = 25/x
→ 5x = 25 × 4
→ 5x = 100
→ x = 20
Verification:
→ 5/4 = 25/x
→ 25/20 = 5/4
« By cancelling, We get,
→ 5/4 = 5/4
_
→ 5/4 = -15/x
→ 5x = -15 × 4
→ 5x = -60
→ x = -12
Verification:
→ 5/4 = -15/x
→ -15/-12 = 5/x
« By cancelling, We get,
→ 5/4 = 5/4
∴ Hence, 5/4 = 20/16 = 25/20 = -15/-12
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« Now, Finding the unknown numerator/denominator of second question,
→ -3/7 = x/14
→ 7x = -42
→ x = -6
Verification:
→ -3/7 = x/14
→ -6/14 = -3/7
« By cancelling, We get,
→ -3/7 = -3/7
_
→ -3/7 = 9/x
→ -3x = 7 × 9
→ -3x = 63
→ x = -21
Verification:
→ -3/7 = 9/x
→ 9/-21 = -3/7
« By cancelling, We get,
→ -3/7 = -3/7
_
→ -3/7 = -6/x
→ -3x = -42
→ x = -42/-3
→ x = 14
Verification:
→ -3/7 = -6/x
→ -6/14 = -3/7
« By cancelling, We get,
→ -3/7 = -3/7
∴ Hence, -3/7 = -6/14 = 9/-21 = -6/14