Question

3x+2y=1 and 2x+y=5

Answer 1

where the question?

Answer 2

3x+2y=1
rearrange the equation to get \[y=(1-3x)/2\]
Now put this value of y in the second equation.
Can you do it?

Answer 3

2x + y = 5
y = -2x + 5

now sub -2x + 5 in for y in the other equation
3x + 2y = 1
3x + 2(-2x + 5) = 1

now just distribute and solve for x. Once you find x, sub that back into either equation to find y

Answer 4

Substitution:
Take the value of any one variable( x or y ) and put it in other equation.
y = 2x + 5
Put this in the other equation, ie,
==>3x -10 = 2y
==> 3x -10 =4x + 10
==> -x = 20
==>x = -20
==> y = 2x + 5 = -40 +5 = -35