Question

Solve following systems of linear equation :
1. x/7 + y/3 = 5, x/2 - y/9 = 6

2. 4x + 6/y = 15, 3x - 4/y = 7 (y is not equal to 0)
Plz give me the solntion with each and every step...

Answer 1

x/7 + y/3 =5
lcm of 7 n 3=21
: x+y/21 =5
: x+y = 105 lst equation
x/2 - y/9 =6
x/18 = 6
x -y = 108
x+y=105
x-y=108
+y-y cancel out
:2x=213
find the value of x substitute in any one of the equations and find y