Question

15/4-7x=9
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Answer 1

Answer:

$\frac{15}{4} - 7x = 9 \\ - 7x = 9 - \frac{15}{4} \\ - 7x = \frac{(36 - 15)}{4} \\ - 7x = \frac{21}{4} \\ x = \frac{21}{4} \times \frac{1}{ - 7} \\ x = - \frac{ 3}{4}$

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Answer 2

15/4 - 7x = 9
Take LCM of 4 and 1 =4

15 - (7x * 4) /4 = 9
15 - (28x) = 9 * 4
15 - 28x = 36
- 28x = 36 -15
-28x = 21
x = -21/28
x = -3/4

Hope it will help you.