(1+0.23+0.34)x(0.23+0.34+0.78)-(1+0.23+0.34+0.78)x(0.23+0.34

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/11 23:34:27

(1+0.23+0.34)x(0.23+0.34+0.78)-(1+0.23+0.34+0.78)x(0.23+0.34)

设A=0.23+0.34,B=0.23+0.34+0.78
原式=(1+A)×B-(1+B)×A
=B+AB-A-AB
=B-A
=0.78

简便运算（1+0.12+0.23）X(0.12+0.23+0.34) - (1+0.12+0.34)X(0.12+0.2 一元一次 x-4/1=3x-3/1.0.6（4-x）-5(0.2x+0.34)+5.3=0.2x-3/2+ x+6/5= 0.7x+1.37=1.5x-0.23 x=? x-1/4.6=0.5/0.23 (1+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34 25/x=5 6.7-x=0.34 3.5x=0.15+x x+1 x x x+1 4.6分之X减1=0.23分之0. 0.6（4-x）-5(0.2x+0.34)+5.3=0.2x-2/3+ x+5/6=7x-10/3.1/2(3x-5)+ 7.5x+1.5x=81 x-0.34x=1.32 19x-3x-4=28 解方程并验算 x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2) 设0.23的循环等于x那么100x等于多少,x等于多少