Answers

  • Brainly User
2016-02-25T05:19:02+08:00
1.25 = 1 ¹/₄  or  ⁵/₄

1/x + (1÷ 5x/4) = 1/5

1/x + (1 × 4/5x) = 1/5

1/x + 4/5x = 1/5

LCD: 5x

(5x)(1)/x + 4/5x (5x) = 1/5 (5x)

5x/x + 20x/5x = 5x/5

5 + 4 = x

x = 9

ANSWER: 9

Check:

1.25 = 1 ¹/₄ or ⁵/₄

1/9 + [1/ (5/4) (9)] = 1/5

1/9 + [1/ (45/4)] = 1/5

1/9 +[1 × (4/45)] = 1/5

1/9 + 4/45 = 1/5

LCD: 45

5/45 + 4/45 = 9/45

9/45 = 9/45

Reduce to lowest term:

1/5 = 1/5  (True)




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