12-6x=8点七解方程的过程?
2个回答
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解:解方程,此方程的解为x = 11/20,【即x = 0.55】
12 - 6x = 8点七
12 - 6x = 8.7
6x = 12 - 8.7
6x = 12 - (8×10+7)/10
6x = 12 - 87/10
6x = 120/10 - 87/10
6x = 33/10
x = 33/10 ÷ 6
x = 33/10 × 1/6
x = 11/20
∴x = 0.55
答:此方程的解为x = 11/20,【即x = 0.55】
12 - 6x = 8点七
12 - 6x = 8.7
6x = 12 - 8.7
6x = 12 - (8×10+7)/10
6x = 12 - 87/10
6x = 120/10 - 87/10
6x = 33/10
x = 33/10 ÷ 6
x = 33/10 × 1/6
x = 11/20
∴x = 0.55
答:此方程的解为x = 11/20,【即x = 0.55】
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