Question

for what value of k "-1" and 2 is solution of linear equation (k - 1) x + (k + 2 )y = k​

Answer 1

Answer:

5 log3-log9

log3^5-log9

log243-log9

log243/9

log27

hence proved

Smenevacuundacy

Answer 2

Step-by-step explanation:

eq. has infinite number of solutions. so a1/a2= b1/b2 = c1/c2

a1= k-1 a2 = k+2b1 = 2 b2 = 5

a1/a2=b1/b2

k-1/2 = k+2/5

5(k-1)=2(k+2) cross multiplying

5k-5 = 2k+4

3k = 9

k=3.