计算.0.25×[(2.8+4.4)÷1.2] 14 15 × 1 4 - 2 15 ÷4 3 5
计算.0.25×[(2.8+4.4)÷1.2]1415×14-215÷435÷[(79+13)×32]37×13+47÷3....
计算.0.25×[(2.8+4.4)÷1.2] 14 15 × 1 4 - 2 15 ÷4 3 5 ÷[( 7 9 + 1 3 )× 3 2 ] 3 7 × 1 3 + 4 7 ÷3.
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(1)0.25×[(2.8+4.4)÷1.2] =0.25×[7.2÷1.2] =0.25×6 =1.5; (2)
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