求这几道一元一次方程的解 要有三步以上的步骤x=(1+40%)(12-x)15x+10(x+130)=2800x÷3/16=6÷1/880(1-5%)+120(1+x%)=(80+120)·(1+16%)
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![求这几道一元一次方程的解 要有三步以上的步骤x=(1+40%)(12-x)15x+10(x+130)=2800x÷3/16=6÷1/880(1-5%)+120(1+x%)=(80+120)·(1+16%)](/uploads/image/z/14562411-51-1.jpg?t=%E6%B1%82%E8%BF%99%E5%87%A0%E9%81%93%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%9A%84%E8%A7%A3+%E8%A6%81%E6%9C%89%E4%B8%89%E6%AD%A5%E4%BB%A5%E4%B8%8A%E7%9A%84%E6%AD%A5%E9%AA%A4x%3D%281%2B40%25%29%2812-x%2915x%2B10%28x%2B130%29%3D2800x%C3%B73%2F16%3D6%C3%B71%2F880%EF%BC%881-5%25%EF%BC%89%2B120%EF%BC%881%2Bx%25%29%3D%2880%2B120%29%C2%B7%EF%BC%881%2B16%25%EF%BC%89)
求这几道一元一次方程的解 要有三步以上的步骤x=(1+40%)(12-x)15x+10(x+130)=2800x÷3/16=6÷1/880(1-5%)+120(1+x%)=(80+120)·(1+16%)
求这几道一元一次方程的解 要有三步以上的步骤
x=(1+40%)(12-x)
15x+10(x+130)=2800
x÷3/16=6÷1/8
80(1-5%)+120(1+x%)=(80+120)·(1+16%)
求这几道一元一次方程的解 要有三步以上的步骤x=(1+40%)(12-x)15x+10(x+130)=2800x÷3/16=6÷1/880(1-5%)+120(1+x%)=(80+120)·(1+16%)
x=1.4(12-x)
x=1.4*12-1.4x
x=16.8-1.4x
x+1.4x=16.8
2.4x=16.8
x=7
15x+10(x+130)=2800
15x+10x+1300=2800
25x=2800-1300
25x=1500
x=60
x/(3/16)=6/(1/8)
x/(3/16)=6*8
x=48*3/16
x=3*3
x=9
80*0.95+120+1.2x=200+1.16x
76+120+1.2x=200+1.16x
196+1.2x=200+1.16x
1.2x-1.16x=200-196
0.04x=4
x=4/0.04
x=100
x=(1+40%)(12-x)
x=1.4(12-x)
x=16.8-1.4x
2.4x=16.8
x=7
15x+10(x+130)=2800
15x+10x+1300=2800
25x=2800-1300
25x=1500
x=60
x÷3/16=6÷1/8
x=6*8*3/16
x=9
80(1-5%)+120(1+x%)=(80+120)·(1+16%)
76+120+1.2x=200*1.16
1.2x=232-196
1.2x=36
x=30