Question

Please help!!!
solve the following system of equations..
x+y=4
x+z=4
y+z=4

Answer 1

This is a simultaneous equation right??!!??

Answer 2

i think this ques can be solved by using the concept of inverse of matrix

Answer 3

Okay :D

Answer 4

Substitution is the easiest.
Eq. 2,3
x+z=4 =4=y+z
therefore
x+z=y+z
Therefore x=y
therefore in (1)
x+y=4
x+x=4
2x=4
x=2
if (x=2) then 2+Y=4, Y=2
if Y=2
Z=2

Answer 5

wow thank :-) You wrote it out so easily.