Question

value of 2(3x+2)-5(x-2y)​

Answer 1

Answer:

Given,

2(3x+2)-5(x-2y)

= 6x+4-5x-10y

= x-10y+4

Answer 2

Step-by-step explanation:

x+ky=2...(1)

3x+2y+5=0...(2)

Here,

a 1 =1,b 1 =−k,c 1 =−2

a 2 =2,b 2 =2,c 2 =5

System has unique solution.

Now

$\frac{a1}{a2} = \frac{b1}{b2} = \frac{1}{3} = \frac{k}{2}$