(-0.7)+(-0.4)+1+(-0.3)+0.5 (-0.06)-(+9.4)+1 0-(-64)-(+43)+(-49)-(+15) (-2)+3+6+(-3)+2+(-4初一的题 要简算~要过程.谢谢

解方程:0.4(x-0.2)+1.5=0.7x-0. 0.3x+0.4=0.7x-1 0.73=0.7×0.7×0. x+1/0.4-0.2x-1/0.7=1等于 （-0.7）+（-0.4）+1+（-0.3）+0.5 (x-1)/0.3-(x+7)/0.5=1.7 x/0.7-(0.17-0.7x)/0. 0.|十0.2十0.3十0.4十0.5十0.6十0.7十0.8十0.9怎样巧算 (0.7)的平方 得数是多少?（0.7）²是0.7×0.7×0.7 还是0.7×0. 0.7:3.5比值是0. 0.7(x+0.5)＝0. 解方程0.7X+1/0.4-0.2X-1/.07=1 0.4分之x+1-0.7分之0.5x+1=1 0.4分之x+1-0.7分之0.5x+1=1 1-0.7+3x/0.8=0.3x-1/0.4-x 1-0.8分之0.7+3x=0.4分之0.3x-1-x 1-(0.7+3x）除以0.8=(0.3x-1)除以0.4-x帮帮 解方程0.3分之0.1x-1+0.4分之0.3-0.7x=1 5(x-1)=x+1 0.4(x-0.2)+1.5=0.7x-0.38