Question

Solve:
3x - 4y = 20 ; x + 2y = 5
by elimination method...​

Answer 1

3x+4y=10

and2x−2y=2

orx−y=1

∴x=y+1

then

3(y+1)+4y=10

3y+3+4y=10

7y=7

∴y=1

then

x=y+1=1+1=2