Mathematics
Junior High
途中式を教えてください！
C
x=3(y-z)
z=4(y-x)
2+ェ=2y -5 …③
3
[解]
のより x-3y+ 3z=0 …④
H790
x+9=2(y-z)
2.x + 3y + 4z = - 4
3r - 10 = y+ 3z
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