若-3a^3b^x+2与3a^2-yb是同类项,则x+y=
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若-3a^3b^x+2与3a^2-yb是同类项,则x+y=若-3a^3b^x+2与3a^2-yb是同类项,则x+y=若-3a^3b^x+2与3a^2-yb是同类项,则x+y=2-y=1x+2=1解得x
若-3a^3b^x+2与3a^2-yb是同类项,则x+y=
若-3a^3b^x+2与3a^2-yb是同类项,则x+y=
若-3a^3b^x+2与3a^2-yb是同类项,则x+y=
2-y=1
x+2=1
解得x=-1
y=1