(72+2x)÷5=12(x-5)
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解:解方程, 此方程的解为x = 186/29
(72 + 2x) ÷ 5 = 12(x - 5)
(72 + 2x)÷ 5 = 12x - 12 × 5
(72 + 2x)÷ 5 = 12x - 60
72 + 2x = (12x - 60)× 5
72 + 2x = 60x - 300
60x - 2x = 72 + 300
58x = 372
x = 372 ÷ 58
x = 372 × 1/58
x = 372/58
∴x = 186/29
答:此方程的解为x = 186/29
(72 + 2x) ÷ 5 = 12(x - 5)
(72 + 2x)÷ 5 = 12x - 12 × 5
(72 + 2x)÷ 5 = 12x - 60
72 + 2x = (12x - 60)× 5
72 + 2x = 60x - 300
60x - 2x = 72 + 300
58x = 372
x = 372 ÷ 58
x = 372 × 1/58
x = 372/58
∴x = 186/29
答:此方程的解为x = 186/29
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