x=0.9
12.5-2x等于4x+7.1
3个回答
相关问题
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解方程 15.7减5x等于6.2 12x减8x等于7.2 4.4除于x等于2.5
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2/7x(-5/12)-5/7x5/12-5/3x1/4
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3x-7/5大于等于x-2/2,x/4-2x-1/12大于1/6-x/3
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X/12+5=4X/3 (3X+2)/4-(5X+1)/2=2 7X+5=6(X+1)
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(7x+12):8x=5:4等于多少?亲,
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计算题解答(16题)1.(-2)x(-5)2.(-1/2)x2/33.(-7/4)x(-4/7)4.(-12.5)x(-
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用线性代数解x1+3x2+5x3+7x4 =12,3x1+5x2+7x3+x4=0,5x1+7x2+x3+3x4=1,7
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解方程1/7x*6/7x*5/6x*4/5x*2/3x*1/2x=12
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5/12x-x/4=1/3 0.5x-0.7=6.5-1.3x 3(x-7)+5(x-4)=15 (y-1)/2=2-(