(1)3..2X÷2-4.2X÷3=9.8递等式计算(能简则简)(2)(30.4-9.85)×1.06÷0.01(3)0.99×1.02
<p>问题：(1)3..2X÷2-4.2X÷3=9.8递等式计算(能简则简)(2)(30.4-9.85)×1.06÷0.01(3)0.99×1.02<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">秦伟刚的回答：<div class="content-b">网友采纳 (1)1.6x-1.4x=9.8 0.2x=9.8 x=9.8÷0.2 x=49 (2)(30.4-9.85)×1.06÷0.01 =20.55÷0.01×1.06 =2055×1.06 =2178.3 (3)0.99×1.02 =(1-0.01)×(1+0.02) =1+0.02-0.01-0.0002 =1.0098
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