如题所述
解:解方程,此方程的解为x = 30
X - 0.8X = 6
x - (8/10)x = 6
x - (4/5)x = 6
(5/5)x - (4/5)x = 6
(1/5)x = 6
x = 6 ÷ 1/5
x = 6 × 5
∴x = 30
答:此方程的解为x = 30
X - 0.8X = 6
x - (8/10)x = 6
x - (4/5)x = 6
(5/5)x - (4/5)x = 6
(1/5)x = 6
x = 6 ÷ 1/5
x = 6 × 5
∴x = 30
答:此方程的解为x = 30
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