3(2x+y)=7xy; 3(x+3y)=11xy
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3(2x+y)=7xy
6x+3y=7xy→ eqn 1
3(x+3y)=11xy
3x+9y=11xy →eqn 2
multiplying equation 2 by 2
6x+18y=22xy
subtracting equation 1 from 2
15y=11xy
15=11x
x=15/11
putting value of x in equation 1
6*(15/11)+3y=7*(15/11)*y
(90+33y)/11=105y/11
90=105y-33y
90=72y
y=15/12
hope it helps you
6x+3y=7xy→ eqn 1
3(x+3y)=11xy
3x+9y=11xy →eqn 2
multiplying equation 2 by 2
6x+18y=22xy
subtracting equation 1 from 2
15y=11xy
15=11x
x=15/11
putting value of x in equation 1
6*(15/11)+3y=7*(15/11)*y
(90+33y)/11=105y/11
90=105y-33y
90=72y
y=15/12
hope it helps you
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