Question

Cross multiplication method 3x- 2y= 12 or 4x-5y= 16

Answer 1

Answer:

x=4  and y=0

Step-by-step explanation:

3x-2y-12=0

4x-5y-16=0

a1=3  a2=4

b1= -2   b2=-5

c1=-12   c2=-16

x/b1c2-c1b2 - y/c1a2-a1c2 - 1/a1b2-b1a2

x/(-2)(-16)-(-12)(-5) -y/(-12)(4)-(3)(-16) - 1/(3)(-5)-(-2)(4)

x/32-60 - y/-48+48 - 1/-15+8

x/-28 - y/0 - 1/-7

x=-28/-7

x=4

y=0/-7

y=0