
递等式计算下面各题.72-44+85 234-135÷9 144+(57-12)×2 95-15×6+41 (15+20)×3 (75+30)
递等式计算下面各题.72-44+85234-135÷9144+(57-12)×295-15×6+41(15+20)×3(75+30)÷(20-5)...
递等式计算下面各题.72-44+85 234-135÷9 144+(57-12)×2 95-15×6+41 (15+20)×3 (75+30)÷(20-5)
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(1)72-44+85, =28+85, =113; (2)234-135÷9, =234-15, =219; (3)144+(57-12)×2, =144+45×2, =144+90, =234; (4)95-15×6+41, =95-90+41, =5+41, =46; (5)(15+20)×3, =35×3, =105; (6)(75+30)÷(20-5), =105÷15, =7. |
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