2/3x÷1/4=12(解方程,要过程)?
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解:解方程, 此方程的解为x = 9/2,【即x = 4.5】
2/3x ÷ 1/4 = 12
(2/3)x ÷ 1/4 = 12
(2/3)x = 12 × 1/4
(2/3)x = 12/4
(2/3)x = 3
x = 3 ÷ 2/3
x = 3 × 3/2
x = 9/2
∴x = 4.5
答:此方程的解为x = 9/2,【即x = 4.5】
2/3x ÷ 1/4 = 12
(2/3)x ÷ 1/4 = 12
(2/3)x = 12 × 1/4
(2/3)x = 12/4
(2/3)x = 3
x = 3 ÷ 2/3
x = 3 × 3/2
x = 9/2
∴x = 4.5
答:此方程的解为x = 9/2,【即x = 4.5】
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