x⊗(5⊗2)=74,
x⊗(5×3+2×2)=74,
x⊗19=74,
3x+19×2=74,
3x=36,
x=12;
故答案为:12.
规定A⊗B=3A+2B,如果x⊗(5⊗2)=74,那么x=_.
规定A⊗B=3A+2B,如果x⊗(5⊗2)=74,那么x=______.
数学人气:858 ℃时间:2020-01-30 04:50:36
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