Question

Solve for x and y: x + y = 2; 2x - y = 1​

Answer 1

Answer:

by elimination method,

x + y = 2 - 1

2x - y = 1 - 2

_________

3x = 3

x = 1

by putting x = 1 in eq 1

we get, 1 + y = 2

y = 2 - 1

y = 1

thus, x = 1 and y = 1

Answer 2

Answer:

x + y = 2

2x-y = 1

3x = 3

x = 1

and x + y = 2

put the value of x

y = 2- x

y = 2 - 1

y = 1......