0.78+0.78*45+0.78*54简便运算

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0.78+0.78*45+0.78*54简便运算

0.78+0.78*45+0.78*54简便运算
0.78+0.78*45+0.78*54简便运算

0.78+0.78*45+0.78*54简便运算
0.78+0.78*45+0.78*54
=0.78*(1+45+54)
=0.78*100
=78

0.78*(1+45+54)=78

0.78+0.78*45+0.78*54
=0.78*1+0.78*45+0.78*54
=0.78*(1+45+54)
=0.78*100
=78

=0.78*(1+45+54)=78

0.78+0.78*45+0.78*54
=0.78*(1+45+54)
=0.78*100
=78