2x+3y=31, y-z=4, x+2z=11 then the value of x+y+z?
Answers
Answered by
1
Step-by-step explanation:
2^2
Answered by
0
Step-by-step explanation:
2x + 3y = 31----(1)
x + 2z = 11 ----(2)
समी.(2) का 2 से गुणा करने पर
2x + 4z = 22 ---(3)
समी. (1) - (3) से
3y - 4z = 9 ----(4)
चूँकि y - z = 4 ----(5)
समी.(5) का 3 से गुणा करने पर
3y - 3z = 12 ---(6)
समी.(6) - (4) से
z = 3
समी.(5) से
y - 3 = 4
y = 7
समी.(1) से
2x + 3(7) = 31
2x + 21 = 31
2x = 10
x = 5
then , x+y+z = 5+7+3
= 15
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