2.4x+5/3×12=20.4解方程?
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2.4x+5/3×12=20.4
2.4x+20=20.4
2.4x=20.4-20
2.4x=0.4
x=0.4÷2.4
x≈0.17
2.4x+20=20.4
2.4x=20.4-20
2.4x=0.4
x=0.4÷2.4
x≈0.17
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解:解方程,此方程的解为x = 1/6
2.4x + 5/3 × 12 = 20.4
[(2×10+4)/10]x + 20 = (20×10+4)/10
(24/10)x + 20 = 204/10
(12/5)x = 204/10 - 20
(12/5)x = 204/10 - 200/10
(12/5)x = 4/10
(12/5)x = 2/5
x = 2/5 ÷ 12/5
x = 2/5 × 5/12
∴x = 1/6
答:此方程的解为x = 1/6
2.4x + 5/3 × 12 = 20.4
[(2×10+4)/10]x + 20 = (20×10+4)/10
(24/10)x + 20 = 204/10
(12/5)x = 204/10 - 20
(12/5)x = 204/10 - 200/10
(12/5)x = 4/10
(12/5)x = 2/5
x = 2/5 ÷ 12/5
x = 2/5 × 5/12
∴x = 1/6
答:此方程的解为x = 1/6
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