Question #7431

system of simultaneous equations by the addition method.
x+y=1
x-y=-7
whats my solution?

Expert's answer

x+y=1

x-y=-7

Let'sadd the equations:

2x=-6

whence x=-3

from the first equation of the system we get y=1-x

whence y=1-(-3)=4

x-y=-7

Let'sadd the equations:

2x=-6

whence x=-3

from the first equation of the system we get y=1-x

whence y=1-(-3)=4

## Comments

## Leave a comment