(4x-5)x2.4=9.6怎么列方程?
3个回答
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解:解方程, 此方程的解为x = 9/4,【即x = 2.25】
(4x - 5) x 2.4 = 9.6
4x × 2.4 - 5 × 2.4 = (9×10+6)/10
(48/5)x - 12 = 96/10
(48/5)x = 48/5 + 12
(48/5)x = 48/5 + 60/5
(48/5)x = 108/5
x = 108/5 ÷ 48/5
x = 108/5 × 5/48
x = 9/4
∴x = 2.25
答:此方程的解为x = 9/4,【即x = 2.25】
(4x - 5) x 2.4 = 9.6
4x × 2.4 - 5 × 2.4 = (9×10+6)/10
(48/5)x - 12 = 96/10
(48/5)x = 48/5 + 12
(48/5)x = 48/5 + 60/5
(48/5)x = 108/5
x = 108/5 ÷ 48/5
x = 108/5 × 5/48
x = 9/4
∴x = 2.25
答:此方程的解为x = 9/4,【即x = 2.25】
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