Question

Maths class 8
solve the question with solution..​

Answer 1

Answer:

52) x  = 8/3

53) x = 0

54) x = 31/6

55) y = 17/22

Step-by-step explanation:

52)

$\frac{8}{x} = \frac{5}{x - 1}$

8(x - 1) = 5 * x    [ cross multiply ]

8x - 8 = 5x

3x = 8

x  = 8/3

53)

$\frac{5(1 - x) + 3(1 + x)}{1 - 2x} = 8$

5(1 - x) + 3(1 + x) = 8(1 - 2x)  [ cross multiply ]

5 - 5x + 3 + 3x = 8 - 16x

8 - 2x = 8 - 16x

14x = 0

x = 0

54)

$\frac{0.2x + 5}{3.5x - 3} = \frac{2}{5}$

5(0.2x + 5) = 2(3.5x - 3)     [ cross multiply ]

x + 25 = 7x - 6

6x = 31

x = 31/6

55)

$\frac{y- (4 - 3y)}{2y - (3 + 4y)} = \frac{1}{5} \\\\\frac{y - 4 + 3y}{2y - 3 - 4y} = \frac{1}{5} \\\\\\\frac{4y - 4}{-2y - 3} = \frac{1}{5}$

5(4y - 4) = 1(-2y - 3)     [ cross multiply ]

20y - 20 = -2y - 3

22y = 17

y = 17/22

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