Solve the simultaneous equation: x+y=2 and 3x-2y=1
...Solve the simultaneous equation: x+y=2 and 3x-2y=1
x=2 and y=1
x=1 and y=1
x=1 and y=2
x=-1 and y=1
Correct answer is B
x + y = 2 --- eqn I
3x - 2y = 1 --- eqn II
Multiply eqn by 2
2x + 2y = 2 --- eqn III
Subtract eqn II from eqnI
5x = 5 => x = 1
Substitute 1 for x in eqn 1
1 + y = 2 => y = 1