解方程X-1/5X=24 X-1/8X=42 X-1/9X=64
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解方程X-1/5X=24X-1/8X=42X-1/9X=64解方程X-1/5X=24X-1/8X=42X-1/9X=64解方程X-1/5X=24X-1/8X=42X-1/9X=64X-1/5X=244
解方程X-1/5X=24 X-1/8X=42 X-1/9X=64
解方程X-1/5X=24 X-1/8X=42 X-1/9X=64
解方程X-1/5X=24 X-1/8X=42 X-1/9X=64
X-1/5X=24
4/5x=24
x=24÷4/5
x30
X-1/8X=42
7/8x=42
x=42÷7/8
x=48
X-1/9X=64
8/9x=64
x=64÷8/9
x=72