Question

solve the equation simultaneously
ax + by + c = 0 px + qy + r = 0
I will mark as brainliest. please tell​

Answer 1

Step-by-step explanation:

ax+by = -c ..(1)

px + qy = -r ..(2)

then (1)*p - (2)*p ;

apx + bpy = -cp

apx + aqy = -ra

y = (ra-cp)/(bp-aq)

ax = -c - (abr - cbp) /(bp-aq)

x = [(cbp - abr) /(bp-aq) ] - c

x = ( cbp - abr - cbp + acq ) / bp - aq

x =( acq - abr ) / (bp - aq)