Question

please, send ans. of questions no. 6,7​

Answer 1

Step-by-step explanation:

1st:

Cross multiply

x = k(y+z)

y = k(z+x)

z = k(x+y)

Add

x+y+z = k(2x+2y+2z)

So k = 1/2

2nd:

2√a - 2√b = √a + √b

√a = 3√b

a = 9b

Put this value in the second equation for the answer 91/73

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