Question

solve the pair of linear equation by using cross multiplication method only 2x+y=5 and 3x+2y=8​

Answer 1

Step-by-step explanation:

2x+y-5=0= equation 1

3x+2y-8=0=equation 2

X. y. 1

2. 1. -5

3. 2. -8

now,

X/ (1*-8) - (2*-5)

=y/(2*-8)-(3*-5)

=1/(2*2)-(3*1)

now,

X/-2=y/-1=1/1

X/-2=1/1

therefore,x=-2

y/-1=1/1

therefore,y=1

now,

X=-2,y=1