Question

Can you solve this linear equations x+y=-2, 2x-y=5 they are one problem

Answer 1

One way is ellimination metahto where we add
add them together
x+y=-2
2x-y=5  +
3x+0y=3
3x=3
divide by 3
x=1
subsitute
x+y=-2
1+y=-2
subtract 1
y=-3

answer
x=1
y=-3
answer is in form (x,y) and is (1,-3)

Answer 2

We use elimination method.


x+y = -2
2x-y = 5
_______
3x    = 3
3x/3 = 3/3
x = 1

As we found the x-value, we now have to find out y-value by substituting the x-value into any equation from the given.

x+y = -2
1+y = -2
-1       -1
y = -3

So, the answer is (1,-3).