40乘以0.2x减0.25x=7怎么算?
0.3x-x乘以0.25=21.15-7x
60乘以(x减1)等于40乘以(x加1)怎么做
解方程 (x+x+三分之一x)乘以3=308 0.3x+0.2乘以(160-x)=36 x+10=40%乘以(36-x+
(1+40%)乘以X乘以80%—X=15
7乘以3-3x=6 怎么解
解方程2乘以0.2x-3乘以0.3x+5乘以0.4x=0.3乘以5
根号x 乘以sin x 的不定积分怎么算
方程:15乘以(3x-8)-4乘以(2x+3)=6乘以(4x-4)-4怎么解
2乘以[1减1/3乘以(x减3分之1加x)]=3乘以[x/6减1/2乘以(2x减3分之10减7x)]
x乘以1200等于括号12减x反括号乘以800这个方程怎么解
(1+根号2)乘以x的平方-(1-根号2)乘以X=0怎么解
解方程:30乘以5+5X+5=(30乘以5+5X)乘以0.9 怎么解