2.25×7.2+2.8÷九分之四
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2.25×7.2+2.8÷九分之四
2.25×7.2+2.8÷九分之四
解,得:
==2.25×7.2+2.8÷(4/9)
==2.25×7.2+(14/5)*(9/4)
==16.2+6.3
==22.5
2.25×7.2+2.8÷九分之四
2.25×7.2+2.8÷九分之四
解,得:
==2.25×7.2+2.8÷(4/9)
==2.25×7.2+(14/5)*(9/4)
==16.2+6.3
==22.5