+204 Solve simultaneous linear equations w/ 3 variables. Please Show work. Try to use elimination method.
x+y+z = 10
-x+y-z = 0
-x+z = 1
Please immediate help!
+23246 Solve by elimination:
x + y + z = 10
-x + y - z = 0
-x + z = 1
Combine the first two equations by addition (adding down the columns):
x + y + z = 10
-x + y - z = 0
--------------------
2y = 10 ---> y = 5
Replace y with 5 in the first equation:
x + y + z = 10 ---> x + 5 + z = 10 ---> x + z = 5
Combine this equation with the third of the original equations by addition:
x + z = 5
-x + z = 1
---------------
2z = 6
z = 3
Since y = 5 and z = 5.5, substitute these values into the first equation:
x + y + z = 10 ---> x + 5 + 3 = 10 ---> x + 8 = 10 ---> x = 2
+23246 Solve by elimination:
x + y + z = 10
-x + y - z = 0
-x + z = 1
Combine the first two equations by addition (adding down the columns):
x + y + z = 10
-x + y - z = 0
--------------------
2y = 10 ---> y = 5
Replace y with 5 in the first equation:
x + y + z = 10 ---> x + 5 + z = 10 ---> x + z = 5
Combine this equation with the third of the original equations by addition:
x + z = 5
-x + z = 1
---------------
2z = 6
z = 3
Since y = 5 and z = 5.5, substitute these values into the first equation:
x + y + z = 10 ---> x + 5 + 3 = 10 ---> x + 8 = 10 ---> x = 2
