x乘5X=0.72怎么解
5x-x=0.72解方程,别跳 -
回答：5x—x=0.72=4x=0.72=x=0.72除以4=0.18
80%X+2/5x=0.72 0.8X+0.4x=0.72 1.2x=0.72 x=0.6
回答：5x—x=0.72=4x=0.72=x=0.72除以4=0.18
80%X+2/5x=0.72 0.8X+0.4x=0.72 1.2x=0.72 x=0.6
0.06x2+5x=0.72 0.12+5x=0.72 5x=0.6 x=0.12
x=7.1 7x－3.4x=0.72 3.6x=0.72 x=0.2 o.5x＋7 X 0.5=7 0.5x+3.5=7 0.5x=3.5 x=7
4×0.72×25×1.25怎么简便运算? -
根据题意，这道题用到的简便计算方法是乘法分配律和乘法结合律，计算方法如下：原式=4*25*0.8*1.25**0.9=100*1*0.9=90。
8X-3(X-5)=6X+(X-1)8x-3x+15=6x+x-1 5x+15=7x-1 7x-5x=15+1 2x=16 x=8 5X-X+7X-3X=0.72 8x=0.72 x=0.72÷8 x=0.09
X=11.2+0.72X怎么解?和4x(2X+1)=3x(5X-1)怎么解? -
X=11.2+0.72X x-0.72x=11.2 0.28x=11.2 x=40 4x（2X+1）3x（5X-1）8x+4=15x-3 15x-8x=4+3 7x=7 x=1
解方程，
解下列方程:m÷6.2=0.79,x÷0.72=5.6,12÷8x=1.11,5X十8=6.3,
最后一题有问题，
8X-3(X-5)=6X+(X-1)8x-3x+15=6x+x-1 5x+15=7x-1 7x-5x=15+1 2x=16 x=8 5X-X+7X-3X=0.72 8x=0.72 x=0.72÷8 x=0.09