Question

Solve by substitutional method:
$(3). \: \sqrt{2x} + \sqrt{3y} = 0 \\ (4). \: \sqrt{3x} - \sqrt{8y} = 0$
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Answer 1

Answer:

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Answer 2

Answer:

Step-by-step Solution: (i) x + y = 14 ; x – y = 4

solve first equation

x + y = 14

x = 14 - y …………..(1)

plug this value in equation second we get

x – y = 4

14 – y - y = 4

Add 14 both side we get

- 2 y = 4 - 14

- 2 y = - 10

Y = -10/-2

Y = 5

Plug y = 5 in equation first we get

X = 14 – y

X = 14 – 5

X = 9

Answer x = 9 , y = 5