作业帮(1+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34
来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/05/15 07:25:57
(1+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34)
要简便计算
要简便计算
(1+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34)
=(0.34+0.56+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34+0.56-0.56)
=0.34x(0.12+0.34+0.56)+(0.56+0.12+0.34)x(0.12+0.34+0.56)-(0.12+0.34)
-(0.12+0.34+0.56)x(0.12+0.34+0.56)+0.56x(0.12+0.34+0.56)
合并同类项,约去相同的式子
=（0.34+0.56）x（0.12+0.34+0.56）-0.12-0.34
=（0.12+0.34+0.56）-0.12-0.34
=0.56
=(0.34+0.56+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34+0.56-0.56)
=0.34x(0.12+0.34+0.56)+(0.56+0.12+0.34)x(0.12+0.34+0.56)-(0.12+0.34)
-(0.12+0.34+0.56)x(0.12+0.34+0.56)+0.56x(0.12+0.34+0.56)
合并同类项,约去相同的式子
=（0.34+0.56）x（0.12+0.34+0.56）-0.12-0.34
=（0.12+0.34+0.56）-0.12-0.34
=0.56
(1+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34
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
8.4x-x= 0.12
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=
解方程 7x-1/0.24=1-0.2x/0.18-5x+1/0.12
解方程:1.6*0.7-0.12x=1 2.3x+7.7x-5=2.8
1.6乘0.7-0.12x=1
25/x=5 6.7-x=0.34 3.5x=0.15+x
解方程 18：X=3:1 10：X=8:5 0.8X=0.12+4.8 75：X=5:4 3X=12÷0.5 1.5：X
解方程63—3X=2X和X-0.5X+0.7X=0.12
x+1 x x x+1
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)+