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