Question

Solve the equation
7y+4 by y+2
= minus 4by3

Answer 1

Answer:

(7y+4)/(y+2)=-4/3

3(7y+4)=-4(y+2)

21y+12=-4y-8

21y+4y=-8-12

25y=-20

y=-20/25

y=-4/5

we are verification

[7(-4/5)+4]/[(-4/5)+2]=-4/3

(-28/5+4)/(-4/5+2)=-4/3

[(-28+20)/5]/[(-4+10)/5]=-4/3

(-8/5)/(6/5)=-4/3

(-8/5)×(5/6)=-4/3

-4/3=-4/3

∴L.H.S=R.H.S

Answer 2

This is done by addition using cross multiplication method