3道解一元一次方程!在线等!要步骤!5/12x-x/4=1/3y-1 / 2 = 2- y+2 / 50.1x+0.3 / 0.2 +2.5= 0.4x -1 / 0.5
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![3道解一元一次方程!在线等!要步骤!5/12x-x/4=1/3y-1 / 2 = 2- y+2 / 50.1x+0.3 / 0.2 +2.5= 0.4x -1 / 0.5](/uploads/image/z/6918224-32-4.jpg?t=3%E9%81%93%E8%A7%A3%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%21%E5%9C%A8%E7%BA%BF%E7%AD%89%21%E8%A6%81%E6%AD%A5%E9%AA%A4%215%2F12x-x%2F4%3D1%2F3y-1+%2F+2++%3D+2-+y%2B2+%2F+50.1x%2B0.3+%2F+0.2+%2B2.5%3D+0.4x+-1+%2F+0.5)
3道解一元一次方程!在线等!要步骤!5/12x-x/4=1/3y-1 / 2 = 2- y+2 / 50.1x+0.3 / 0.2 +2.5= 0.4x -1 / 0.5
3道解一元一次方程!在线等!要步骤!
5/12x-x/4=1/3
y-1 / 2 = 2- y+2 / 5
0.1x+0.3 / 0.2 +2.5= 0.4x -1 / 0.5
3道解一元一次方程!在线等!要步骤!5/12x-x/4=1/3y-1 / 2 = 2- y+2 / 50.1x+0.3 / 0.2 +2.5= 0.4x -1 / 0.5
5/12x-x/4=1/3
去分母两边同时乘以12,
5x-3x=4
合并同类项:2x=4
系数化为1:x=2
y-1 / 2 = 2- y+2 / 5
去分母:10y-5=20-10y+4
合并同类项:20y=29
系数化为1:y=29/20
0.1x+0.3 / 0.2 +2.5= 0.4x -1 / 0.5
小数化成分数:x+15+25=4x-20
合并同类项:3x=60
系数化为1:x=20
5/12x-x/4=1/3
去分母两边同时乘以12,
5x-3x=4
合并同类项:2x=4
系数化为1:x=2
y-1 / 2 = 2- y+2 / 5
去分母:10y-5=20-10y+4
合并同类项:20y=29
系数化为1:y=29/20
0.1x+0.3 / 0.2 +2.5= 0.4x -1...
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5/12x-x/4=1/3
去分母两边同时乘以12,
5x-3x=4
合并同类项:2x=4
系数化为1:x=2
y-1 / 2 = 2- y+2 / 5
去分母:10y-5=20-10y+4
合并同类项:20y=29
系数化为1:y=29/20
0.1x+0.3 / 0.2 +2.5= 0.4x -1 / 0.5
小数化成分数:x+15+25=4x-20
合并同类项:3x=60
系数化为1:x=20
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