(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39+0.87)X(0.25+0.39)怎么计算?要用简便方法,包括结果,

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/01 17:05:31

(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39+0.87)X(0.25+0.39)怎么计算?要用简便方法,包括结果,
(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39+0.87)X(0.25+0.39)怎么计算?要用简便方法,包括结果,

(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39+0.87)X(0.25+0.39)怎么计算?要用简便方法,包括结果,
(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39+0.87)X(0.25+0.39)
=(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39）X(0.25+0.39)+0.87X(0.25+0.39)
=(1+0.25+0.39)X(0.25+0.39）+(1+0.25+0.39)X0.87-(1+0.25+0.39）X(0.25+0.39)-0.87X(0.25+0.39)
=(1+0.25+0.39)X0.87-0.87X(0.25+0.39)
=0.87+0.87X(0.25+0.39）-0.87X(0.25+0.39
=0.87

x-0.25x+1=10.4x+0.25x-1 x=1+0.5x+0.25x+0.125x+0.0625x求x的值 x-1/0.25-x/12.5=1.2 x等于多少? 0.3(x+1)+0.25(100-x)=2/5x 69.5+0.25X=X-1 69.5-0.25X=X-1 0.25/2x+1-0.5/x-2 0.3x+7x-0.25x=21.15 x+7=2x+3 1.2x+1=0.01x+三分之五 4x-26=3x+4 6x+2=5x+110.3x+7x-0.25x=21.15x+7=2x+31.2x+1=0.01x+三分之五4x-26=3x+46x+2=5x+114(x+1)=x+10 求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13 求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13 解方程：5x+5=-0.25x(x+1)-0.25(x+1)-4.75 (0.5x+1)+(0.25x+0.5)+(0.125x+2.25)=x怎么解, 0.25X+1/3X+(0.25X+1/3X)*1/7+30=X 这个方程怎么解 0.25x 1/2X^3-1/4X+0.2X^2+0.25x-0.5x^3-1/5x^2的值与x无关 （x-4)-(x+4)=0.25x 66=X+0.25X求X 0.25x+3.6=x解x