①2x+47/8=4.875 ②2x+51/5=10−34/5 ③0.4×6+3x=4.8 ④9x-2.7÷0.03=0.
问题描述:
①2x+4
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②2x+5
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③0.4×6+3x=4.8 | ④9x-2.7÷0.03=0. |
答
(1)2x+478=4.875, 2x+478-4.875=4.875-4.875, 2x=0, 2x...