1.0.1+0.4+0.7+1.+3.7+4=
(1) 0.7(3x-3.7)-4=-1.3(3x-3.7) (2) 60%(y-1)=0.1+34%(y+1) (3)
化简比1.0.3:12=2.0.25:4=3.2.8:0.7=4.2.1:1.2=5.0.1:0.8=6.7:3.5=7
3.7除以0.4等于()除以4
(5x+1/4)-(2x-1/6)=1-(3-x/12)怎么做?还有1-(0.7+3x/0.8)=(0.3x-1/0.4
1.设A,B是两个事件,且P(A)=0.4,P(B)=0.7
:(-1/2)+3又4分之1+2.75+(-6又2分之1)(-2.4)+(-3.7)+(+4.2)+0.7+(-4.2)
解比例X:5=0.4:0.7
1-0.7+3x/0.8=0.3x-1/0.4-x
1-(0.7+3x)除以0.8=(0.3x-1)除以0.4-x
1-0.8分之0.7+3x=0.4分之0.3x-1-x
解方程:(4x-0.2)/0.3=(3x-1.1)/0.4+(0.16-0.7x)/0.06
解方程 3.7x-30=0.7x