मराठी

If a = 2 X − 3 5 , B = 3 X − 2 3 and 2(3a - B) + 1 = 0, Find the Value of 'X'. - Mathematics

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प्रश्न

If `"a" = (2x - 3)/(5), "b" = (3x - 2)/(3)`and 2(3a - b) + 1 = 0, find the value of 'x'.

बेरीज

उत्तर

Given `"a" = (2x - 3)/(5), "b" = (3x - 2)/(3)`

Consider,
2(3a - b) + 1 = 0
Substituting the expressions for a and b in the equation, we get

`2[3((2x - 3)/5) - (3x - 2)/(3)] + 1` = 0

⇒ `2[(6x - 9)/5 - (3x - 2)/3] + 1` = 0

⇒ `2[(3(6x - 9) - 5(3x - 2))/(15)] + 1` = 0

⇒ `2[(18x - 27 - 15x + 10)/(15)] + 1` = 0 

⇒ `2[(3x - 7)/(15)] + 1` = 0

⇒ `2[(3x - 7)/(15)]` = -1

⇒ 3x - 7 = `-1(15/2)`

⇒ 3x - 7 = `-(15)/(2)`

⇒ 3x = `-(15)/(2) + 7`

⇒ 3x = `(-15 + 14)/(2)`

⇒ x = `-(1)/(6)`.

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Linear Equation in Two Variables
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पाठ 7: Linear Equations - Exercise 7.1

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फ्रँक Mathematics [English] Class 9 ICSE
पाठ 7 Linear Equations
Exercise 7.1 | Q 9
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