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1.6x-0.7x=4.5 9(x-7.3)=5.4
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解方程:6x+9x=45 3.6a+4.5a=56.7 4(0.8x)=7.2 3x+5*0.3=4.5 7.4x+12
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(3.5x-7)\6=8-4x 48-(7.5-x)*4=9x
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1/1x2x3x4+1/2x3x4x5+1/3x4x5x6+1/4x5x6x7+1/5x6x7x8+1/6x7x8x9+
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解方程:①4.2+0.5x=5.6;②x- 3 5 x = 2 7 ;③ 4 0.6 = x 0.9 .
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解方程或比例.5.4×5-6X=3 0.7:[7/4]=28%:X 4+[1/9
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7x=2+3x 3.5x=28 5(x+8)-5=6(2x-7) 9(x-4)=7(4-x)
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1.x+1/5-4/7x=7/4 2.3.6*0.5-0.75x0.8
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解方程: 9x/0.7=9; 25-3x=19; 4(x-9)=4; x-18=4=8; 5.6x-4.5/3=5.5;
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解方程:9x/0.7=9; 25-3x=19; 4(x-9)=4; x-18=4=8; 5.6x-4.5/3=5.5;
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解方程5x-2+1.8=3.6 7(x-1.2)=2.1 9.4x-0.4x=16.2 0.2x-0.4+0.5=3.7