120=-2x+60x+800
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120=-2x+60x+800
120=-2x+60x+800
120=-2x+60x+800
首先合并同类项再移项就得:58X=-680
X=-680/58
X=-340/29
120=-2x+60x+800
58x=-620
x=-310/29
120=-2x+60x+800
(60-x)(120-x)=800x是多少
60+3x=120+2x x=?
x/(120-x)=(60-x)/60
x/(120-x)=x/60
x+2/3x=60 x-3/5x=120 4x+18x=1x+2/3x=60 x-3/5x=120 4x+18x=132!
x+3分之2 x=60 x-5分之3x=120 4x+18x=132x+3分之2 x=60 x-5分之3x=120 4x+18x=132
x-x/4-120=x/2
x+2/3x=60 x-2/5x=120 4x+18x=132
120+60%x=x
X+X-6+X-4+X/2=60
x*x-(x-2)*(x-5)=60
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
function f=myfun(X) f=0.34*X(1)+0.004*X(2)+0.14*X(3)+0.24*X(4)+0.08*X(5)+0.03*X(6)+6.05*X(7); goal=function f=myfun(X)f=0.34*X(1)+0.004*X(2)+0.14*X(3)+0.24*X(4)+0.08*X(5)+0.03*X(6)+6.05*X(7);goal=[1,1,1];weight=[1,1,1];X0=[190;150;120;60;800;1100;4];
(3x*x+3x*x+x*x)*2=120,
(4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60)
x+3分之2x=60 x-5分之3x=120 解方程
x/50-3=x/60+2 (15+25/x)=120/10+x