(3.4-1.2×0.65)÷0.05的简便运算是怎样的?

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(3.4-1.2×0.65)÷0.05的简便运算是怎样的?(3.4-1.2×0.65)÷0.05的简便运算是怎样的?(3.4-1.2×0.65)÷0.05的简便运算是怎样的?(3.4-1.2×0.65

(3.4-1.2×0.65)÷0.05的简便运算是怎样的?
(3.4-1.2×0.65)÷0.05的简便运算是怎样的?

(3.4-1.2×0.65)÷0.05的简便运算是怎样的?
(3.4-1.2×0.65)÷0.05
=(3.4-1.2×0.65)×20
=3.4×20-1.2×0.65×20
=68-1.2×13
=68-15.6
=52.4