作业帮(1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)等于几?用简便方法计算!
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(1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)等于几?用简便方法计算!
(1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)等于几?用简便方法计算!
(1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)等于几?用简便方法计算!
(1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)
=(1+0.12+0.23)x(0.12+0.23+0.34)-(0.12+0.23+0.34)x(0.12+0.23) -1x (0.12+0.23)
=[1+0.12+0.23-(0.12+0.23)]x(0.12+0.23+0.34)-(0.12+0.23)
=0.12+0.23+0.34-0.12-0.23
=0.34
简便运算 (1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)
(1+0.12+0.23)X(0.12+0.23+0.34)-(1+0.12+0.23+0.34)X(0.12+0.23)=?
简便运算（1+0.12+0.23）X(0.12+0.23+0.34) - (1+0.12+0.34)X(0.12+0.23)
X+0.12x+(18-x)( 1+10%)=20
(1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)等于几?用简便方法计算!
8.4x-x= 0.12
解方程,亲们帮帮忙!2／3＋50％x＝1.6 x＝?x-40%x=0.96 x=?4/5x-1/2x=6.4 x=?80%x-0.6x=0.12 x=?1/2(x-80%)=0.6 x=?4(x+1/4)=16 x=?40%+20%x+7.2 x=?5/6(x-40%)=2
解方程 7x-1/0.24=1-0.2x/0.18-5x+1/0.12
0.02x/0.03+1=(0.18-0.18x)/0.12-(1.5-3x)/2
解方程:1.6*0.7-0.12x=1 2.3x+7.7x-5=2.8
0.02x/0.03+1=-0.18x+0.18/0.12-1.5-3X/2
0.6分之5x-2-0.12分之0.5x-0.12=1二分之一【x-二分之一（x-1）】=三分之二（x-1）
0.2(0.2-x)/0.01+1.2x=0.12+20x
解方程 x-0.12X=2.816
x*0.12+(60-x)*0.14=8
7x等于0.12+2x
解方程：X-0.12X=2.816
7x=0.12+4x