Mathematics ternary linear equation ① x + 2Y + 3Z = 26 ② 2x + 3Y + Z = 34 ③ 3x + 2Y + Z = 29 multiple choice problem solving process! Trivariate linear equation ① x + 2Y + 3Z = 26 ② 2x + 3Y + Z = 34 ③ 3x + 2Y + Z = 29 multiple choice problem solving process! A x=37/4 ,y=17/4,z=9/4 B x=37/4, y=19/4,z=9/4 C x=39/4, y=17/4,z=9/4 D x=37/4 ,y=17/4,z=11/4

② - 3 is: - x + y = 5, y = 5 + X
① - 3: - 2x + 2Z = - 3 - x + Z = - 3 / 2, z = x-3 / 2
Substituting y = 5 + X and z = x-3 / 2 into (1), we get: x + 2 (10 + x) + 3 (x-3 / 2) = 26
6x+11/2=26
6x=41/2
x=41/12
y=101/12 z=23/12
No answer
If formula 3 = 39, choose D

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