(12.5-12.5x0.9)÷0.25的简便运算
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(12.5-12.5x0.9)÷0.25=12.5×(1-0.9)÷0.25=12.5×0.1÷0.25=1.25÷0.25=5
咨询记录 · 回答于2022-10-15
(12.5-12.5x0.9)÷0.25的简便运算
(12.5-12.5x0.9)÷0.25=12.5×(1-0.9)÷0.25=12.5×0.1÷0.25=1.25÷0.25=5
9.12÷2.4x(3.6÷0.9)
9.12÷2.4×(3.6÷0.9)=9.12÷2.4×4=3.8×4=14.4
(3x十12)÷3=9
(3x+12)÷3=9(3x+12)=9×33x+12=273x=27-123x=15x=5