望采纳哟!
0.5x(x+4)-0.4(x+4)=3.2 x是多少
1个回答
相关问题
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0.5x(x+4)-0.4(x+4)=3.2
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0.4x+3.2=2.5x+0.05 X是多少
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解下列线性方程组.x1+x2-3x4-x5=0,x1-x2+2x3-x4=0,4x1-2x2+6x3+3x4-4x5=0
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X1 - X3 - X4 -5X5=0 X1+2X2+3X3+3X4+7X5=0 X1+X2+X3+X4+X5=0 X2
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1)4x2-12x-1=0 (2)3x2+2x-3=0 (3)5x2-4x-12=0 (4)3x(x+2)=5(x+2)
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(1)X-1)(1-2x)>0(2)6x²+5x<4(3)-3x²+x+1>0(4)x²-2x+1≤0(5)4x-x²<
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0.2*(3X-5)+3=0.4*(X-2)+4
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0.5x-2=2+0.4x 是多少?
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4道解比例①30:4=X:10 ② 0.12:4=0.6:X ③ 2/3:X+2:5 ④X:4=0.3:5
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线性代数,x1+x2-3x3-x4=0 3x1-x2-3x3+4x4=0 x1+5x2-9x3-8x4=0