SOLUTION: A) given that x+y=42, y+z=67 and x+z=55, find the value of x+y+z.
B) hence, find the values of x, y and z
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Question 1116924: A) given that x+y=42, y+z=67 and x+z=55, find the value of x+y+z.
B) hence, find the values of x, y and z
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
3.
Adding them all together,
.
.
.
From 3,
Substituting into 2,
4.
Adding 1 and 4,
Solve for y then use the other equations to solve for x and z.
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