If2x+3y=26; 2y+z=19 andx +2z=29, what is the value ofx+y+z?
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by solving equations we find
x= 7
y = 4
& z=11
so x+ y +z = 7+4+11
= 22
x= 7
y = 4
& z=11
so x+ y +z = 7+4+11
= 22
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