Question

Solve, by Substitution method 3x-y=3 and 9x-2y=9​

Answer 1

Step-by-step explanation:

3x-y=3 ---------------------(1)

9x-2y=9 -------------------(2)

from eqn.(1), we get,

x= 3+y/3 -------------------(3)

substitute eqn.(3) in (2)

9(3+y/3)-2y=9

3(3+y)-2y=9

9+3y-2y=9

9+y=9

y=9-9

y=0

substitute the value of y in eqn.(3)3

x= 3+(0)/3

x= 3/3

x= 1

HENCE THE VALUE OF x is 1 and y is 0

Answer 2

hell ooooo

it took some time......

3x-y=3 ---------------------(1)

9x-2y=9 -------------------(2)

from (1), we get,

x= 3+y/3 -------------------(3)

substitute eqn.(3) in (2)

9(3+y/3)-2y=9

3(3+y)-2y=9

9+3y-2y=9

9+y=9

y=9-9

y=0

substitute the value of y in eqn.(3)3

x= 3+(0)/3

x= 3/3

x= 1

HENCE THE VALUE OF x is 1 and y is0

elemination method :