
x+0.8= 6.2,解方程并检验?
2个回答
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解:解方程, 此方程的解为x = 27/5,【即x = 5.4】
x + 0.8 = 6.2
x + 8/10 = (6×10+2)/10
x + 4/5 = 62/10
x + 4/5 = 31/5
x = 31/5 - 4/5
x = 27/5
∴x = 5.4
经检验,5.4 + 0.8 = 6.2符合题意
答:此方程的解为x = 27/5,【即x = 5.4】
x + 0.8 = 6.2
x + 8/10 = (6×10+2)/10
x + 4/5 = 62/10
x + 4/5 = 31/5
x = 31/5 - 4/5
x = 27/5
∴x = 5.4
经检验,5.4 + 0.8 = 6.2符合题意
答:此方程的解为x = 27/5,【即x = 5.4】
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