（x-1600)*0.05=62.79 求x的值?请写出解题步骤,谢谢!

（x-1600)*0.05=62.79 求x的值?请写出解题步骤,谢谢! 3x*x=1600+x*x-80x X — 0.05X = 2320 X=?X — 0.05X = 2320 X=? matlab中f=@(x)[x(2);x(3);0.05*x(1)*(x(2)+x(3))]中@(x)什么意思 z=0.015x*x+y*x*0.05+(1-x-y)*2.5*(x+y) x>0.35.xy>0.70x+y （X+X)+(X-X)+(X*X)+(X/X)=100 1600/x-20-1600/x=4 (x-27.8%x)-27.8%x=1600怎么解 (x+1)/0.3-2x=(0.1x+0.2)/0.05 3/0.2x-0.1-0.05/(x+2)%=0.1x 0.4x+3.2=2.5x+0.05 X是多少 x-x*0.05=600 x等于几 2X(x÷0.05)=(4500-x)÷0.02 X-0.05X=382,X为多少? (44-x)(20+5x)=1600 (X-120)[70-(X-130)]=1600 , (X-120)(X-130)=1600 X^2-10x-1600=0