Question

Find the value of a and b for which the following equations has infinitely many solutions
Help!!
2x+y-5=0 (a+b)x+(5a-7b)y-20=0

Answer 1

Step-by-step explanation:

from and equation to have infinite solution the equation should be same for a now let us equator the equation and then solve it 2 x minus 3 Y is equal to 7 a b a + b x minus A plus B minus 3 Y is equal to 4 a + b equate the value of a x + B Y is equal to cm in both cases after this we get a + b is equal to C and defer the value of a and b is equal to minus 5 and minus one