x:2/5=8:1.5怎么算?
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解:解方程,此方程的解为x = 32/15
∵X : Y = X ÷ Y = Z
∴x : 2/5 = 8 : 1.5
x ÷ 2/5 = 8 ÷ 1.5
x ÷ 2/5 = 8 ÷ (1×10+5)/10
x ÷ 2/5 = 8 ÷ 15/10
x ÷ 2/5 = 8 ÷ 3/2
x ÷ 2/5 = 8 × 2/3
x ÷ 2/5 = 16/3
x = 16/3 × 2/5
∴x = 32/15
答:此方程的解为x = 32/15
∵X : Y = X ÷ Y = Z
∴x : 2/5 = 8 : 1.5
x ÷ 2/5 = 8 ÷ 1.5
x ÷ 2/5 = 8 ÷ (1×10+5)/10
x ÷ 2/5 = 8 ÷ 15/10
x ÷ 2/5 = 8 ÷ 3/2
x ÷ 2/5 = 8 × 2/3
x ÷ 2/5 = 16/3
x = 16/3 × 2/5
∴x = 32/15
答:此方程的解为x = 32/15
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