5.6:x=0.2:2.5怎么算?
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解:解方程,此方程的解为x = 70
5.6 : x = 0.2 : 2.5
5.6 ÷ x = 0.2 ÷ 2.5
(5×10+6)/10 ÷ x = 2/10 ÷ (2×10+5)/10
56/10 ÷ x = 1/5 ÷ 25/10
28/5 ÷ x = 1/5 ÷ 5/2
28/5 ÷ x = 1/5 × 2/5
28/5 ÷ x = 2/25
x = 28/5 ÷ 2/25
x = 28/5 × 25/2
∴x = 70
答:此方程的解为x = 70
5.6 : x = 0.2 : 2.5
5.6 ÷ x = 0.2 ÷ 2.5
(5×10+6)/10 ÷ x = 2/10 ÷ (2×10+5)/10
56/10 ÷ x = 1/5 ÷ 25/10
28/5 ÷ x = 1/5 ÷ 5/2
28/5 ÷ x = 1/5 × 2/5
28/5 ÷ x = 2/25
x = 28/5 ÷ 2/25
x = 28/5 × 25/2
∴x = 70
答:此方程的解为x = 70
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