1.2*0.8X+2*0.9(60-X)=87的解?

1.2*0.8X+2*0.9(60-X)=87的解?0.96X+1.8(60-X)=870.96X+108-1.8X=87108-0.84X=870.84X=108-870.84X=21 X=25

60*0.8 + 1.2(x-60) = 0.88x求具体步骤

48+1.2x-72=0.88x 1.2x-0.88x=72-48 0.32x=24 x=24/0.32 x=75

括号x-0点八括号乘与一点2=0点二四

3+5+2*8=24 (9+10-11)*3=24 (11+8-7)*2=24 5*5-5/5=24 (9-3-3)*8=24 (8-3)*3+9=24 (3+8)*3-9=24

50*括号x+3=60*括号x-2*x等于多少

50(x+3)=60(x-2x),5(x+3)=6(-x),5x+15=-6x,11x=-15,x=-15/11

60*0.8+1.2x=(60+x)*0.88 要写过程

60*0.8+1.2x=(60+x)*0.88 48+1.2x=60*0.88+0.88x1.2x-0.88x=52.8-480.24x=4.8x=4.8÷0.24x=20

(1-x)(0.8-x)=1.2

(1-x)(0.8-x)=1.20.8-0.8x-x+x^2=1.2x^2-1.8x-0.4=0x1=0.9+(0.9^2+0.4)^0.5=0.9+(1.21)^0.5=0.9+1.1=2x2=0.9-(0.9^2+0.4)^0.5=0.9-(1.21)^0.5=0.9-1.1=-0.2

0.8*与括号7.2+x括号等于9.6这个方程怎么解

0.8*(.2+x)=9.6解:2+x=9.6÷0.82+x=12x=10

1.2括号x加5括号等于60应该怎么算

1.2(x+5)=60;x+5=60÷1.2x+5=50x=50-5x=45

三括号x-0点八括号=5分之27x等于多少

三括号x-0点八括号=5分之27x等于多少3(x-0.8)=27/5x-0.8=9/5x=0.8+1.8x=2.6

二括号x-1方=2点八八

2(X-1)^2=2.88,(X-1)^2=1.44,X-1=±1.2,X1=2.2,X2=-0.2.