①200x+50(22-x)=1400
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①200x+50(22-x)=1400
②10x-5(10-x)=55
③3(x+5)+2x=5×6
②10x-5(10-x)=55
③3(x+5)+2x=5×6
![①200x+50(22-x)=1400](/uploads/image/z/4806889-25-9.jpg?t=%E2%91%A0200x%2B50%EF%BC%8822-x%29%3D1400)
① 200x+50(22-x)=1400
200x+1100-50x=1400
150x+1100-1100=1400-1100
150x÷150=300÷150
x=2
② 10x-5(10-x)=55
10x-50+5x=55
15x-50+50=55+50
15x÷15=105÷15
x=7
③ 3(x+5)+2x=5×6
3x+15+2x=30
5x+15-15=30-15
5x÷5=15÷5
x=3
200x+1100-50x=1400
150x+1100-1100=1400-1100
150x÷150=300÷150
x=2
② 10x-5(10-x)=55
10x-50+5x=55
15x-50+50=55+50
15x÷15=105÷15
x=7
③ 3(x+5)+2x=5×6
3x+15+2x=30
5x+15-15=30-15
5x÷5=15÷5
x=3
①200x+50(22-x)=1400
(x-22)+(x-24)+(x-27)+(x-20)=x
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
(X+X)+(X-X)+(X*X)+(X/X)=100
x+x/3+2x=200
x-4x=102 x-0.8x=22
(4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(x+1)
解方程 (x+5)(200-5x)=(x+5)(200-5x)+x(x+5)
①2(x+3)(x-3)=x²+(x-1)(x+1)+2x
求解几道方程.1/2x-20+1/2【x-(1/2x-20)】+20=x-50 x/(200-400/3)+x/(200
x+x=x+15
①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+1)-22x+33x-1③(6x-1)(2x-1)(3x-