x÷4+5=(ⅹ-100)÷3等于多少?
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解:解方程, 此方程的解为x = 460
x ÷ 4 + 5 = (ⅹ - 100) ÷ 3
x × 1/4 + 5 = (x - 100)× 1/3
(1/4)x + 5 = (1/3)x - 100/3
(1/3)x - (1/4)x = 5 + 100/3
(4/12)x - (3/12)x = 15/3 + 100/3
(1/12)x = 115/3
x = 115/3 ÷ 1/12
x = 115/3 × 12
∴x = 460
答:此方程的解为x = 460
x ÷ 4 + 5 = (ⅹ - 100) ÷ 3
x × 1/4 + 5 = (x - 100)× 1/3
(1/4)x + 5 = (1/3)x - 100/3
(1/3)x - (1/4)x = 5 + 100/3
(4/12)x - (3/12)x = 15/3 + 100/3
(1/12)x = 115/3
x = 115/3 ÷ 1/12
x = 115/3 × 12
∴x = 460
答:此方程的解为x = 460
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