如题所述
举ä¾è¯´æï¼
ç¨30+ 33=63 630÷63=10 10x12=120ååºç»¼åç®å¼
630÷ï¼30+33ï¼Ã12
=630÷6Ã12
=10Ã12
=120
ç¨30+ 33=63 630÷63=10 10x12=120ååºç»¼åç®å¼
630÷ï¼30+33ï¼Ã12
=630÷6Ã12
=10Ã12
=120
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