x÷30+x÷24=9怎么算?
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解:解方程,此方程的解为x = 120
x ÷ 30 + x ÷ 24 = 9
x×1/30 + x × 1/24 = 9
(1/30)x + (1/24)x = 9
(4/120)x + (5/120)x = 9
(9/120)x = 9
(3/40)x = 9
x = 9 ÷ 3/40
x = 9×40/3
∴x = 120
答:此方程的解为x = 120
x ÷ 30 + x ÷ 24 = 9
x×1/30 + x × 1/24 = 9
(1/30)x + (1/24)x = 9
(4/120)x + (5/120)x = 9
(9/120)x = 9
(3/40)x = 9
x = 9 ÷ 3/40
x = 9×40/3
∴x = 120
答:此方程的解为x = 120
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