5.6:7/8=63:x怎么算?
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解:解方程, 此方程的解为x = 315/32
∵X : Y = X ÷ Y = Z
∴5.6 : 7/8 = 63 : x
5.6 ÷ 7/8 = 63 ÷ x
(5×10+6)/10 ÷ 7/8 = 63 ÷ x
56/10 ÷ 7/8 = 63 ÷ x
28/5 × 8/7 = 63 ÷ x
32/5 = 63 ÷ x
x = 63 ÷ 32/5
x = 63 × 5/32
∴x = 315/32
答:此方程的解为x = 315/32
∵X : Y = X ÷ Y = Z
∴5.6 : 7/8 = 63 : x
5.6 ÷ 7/8 = 63 ÷ x
(5×10+6)/10 ÷ 7/8 = 63 ÷ x
56/10 ÷ 7/8 = 63 ÷ x
28/5 × 8/7 = 63 ÷ x
32/5 = 63 ÷ x
x = 63 ÷ 32/5
x = 63 × 5/32
∴x = 315/32
答:此方程的解为x = 315/32
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