5x除以0.5等于42 怎么解

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5x除以0.5等于42怎么解5x除以0.5等于42怎么解5x除以0.5等于42怎么解5x÷0.5=425x=42×0.55x=21x=4.25x/0.5=4210x=42x=4.25x=42*0.5=

5x除以0.5等于42 怎么解
5x除以0.5等于42 怎么解

5x除以0.5等于42 怎么解
5x÷0.5=42
5x=42×0.5
5x=21
x=4.2

5x/0.5=42
10x=42
x=4.2

5x=42*0.5=21;
x=21/5=4.2

5x÷0.5=42
5x=21
x=4.2

还原题目用数学算式:
(5x)/(0.5)=42
解得:5x=42*0.5
x=4.2