x-25%=85-x-15,解方程怎么算?
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解含宏:解方程, 此方程的宏老辩解为x = 281/8,【即x = 35.125】
x - 百分之25 = 85 - x - 15
x - 25/100 = 70 - x
x + x = 70 + 25/100
2x = 7000/100 + 25/100
2x = 7025/100
2x = 281/4
x = 281/4 ÷ 2
x = 281/4 × 1/2
x = 281/8
∴x = 35.125
答:此方程的解为x = 281/8,蔽缺【即x = 35.125】
x - 百分之25 = 85 - x - 15
x - 25/100 = 70 - x
x + x = 70 + 25/100
2x = 7000/100 + 25/100
2x = 7025/100
2x = 281/4
x = 281/4 ÷ 2
x = 281/4 × 1/2
x = 281/8
∴x = 35.125
答:此方程的解为x = 281/8,蔽缺【即x = 35.125】
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