大概是7.96,前提是我题目没看错
x+3/0.15-x+4/0.2=1.6
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6.5:x=3.25:4 [x/2]=[0.15/0.6] [1.25/0.25]=[x/1.6].
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14.5-5/2﹙x+3﹚=0.1/0.15x-0.6/0.4x-2.8
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(1)3x2-15=0(2)x2+4x-6=0(3)2x2-7x+3=0(4)(x+2)2-10(x+2)+24=0.
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X:3/5=5/6:2 1.3/3.9=20/x 2/3:5/6=X:0.5 X/0.15=0.4/0.03 x:24/
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2/5:x=4/5:60 0.2/6.3=X/5 0.6:x=15:1 12:14=X :1/6
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(1) x²+x-6=0 (2)x²-√3x-1/4=0 (3)3x²-6-2=0
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(1)x²+x-6=0 (2)x²-√3 x-1/4=0 (3) 3x²-6x-2=0 用
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15-2x=7.5 1.6÷x=2.4÷0.15 2.7÷0.3-7x=5.5 18x-4x-2.5x=3.68 3.6
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2x^2+3x+1=0 2x^2-7x-15=0 3x^2-7x-6=0
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数学题求解解方程.2X0.2x=5.6 8x\6=0.4 3x+5x=4.8 5x\15=15 0.6x=9.6 2、简