15除以x=7除以28
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/12 18:23:44
15%÷{x+1}=12.5%15%=12.5%(x+1)15%÷12.5%=x+1x+1=1.2x=0.2
(x+7)/(x+6)+(x+9)/(x+8)=(x+10)/(x+9)+(x+6)/(x+5)(x+9)/(x+8)-(x+10)/(x+9)=(x+6)/(x+5)-(x+7)/(x+6)[(x+
8÷0.01=2x/3800×3=2xx=1200
x/15+24/60=x/12-15/60x=39
2/3x除以4/5=3/102/3X=3/10×4/52/3X=12/50X=18/501/2x除以5/7=15/281/2X=15/28×5/7X=75/983/4除以1/2x=16/153/2÷X
X除以(X-2)+(X-9)除以(X-7)=(X+1)除以(X-1)+(X-8)除以(X-6)(x-2+2/x-2)+(x-7-2/x-7)=(x-1+2/x-1)+(x-6-2/x-6)1+(2/x
①40.32÷x+15=22.2②64.9÷x-55=0.940.32÷x=22.2-1564.9÷x=0.9+55x=40.32÷7.2x=64.9÷55.9x=5.6x=649/559③201.2
(3.8-x)除以7=3除以2828(3.8-x)=7*3106.4-28x=2128x=85.4x=85.4/28x=3.05再问:106.4-28x=21106.4那里来的???
经化简得(x+4)(x+7)=(x+5)(x+6)无解!再问:怎么能把1约掉再答:通分啊!两边就消去了!再问:怎么通分,具体步骤再答:上传了,你可以看看具体步骤再问:哪上传了再问:就是上面的吗再答:你
x*15/8=9/8x=5/33/4x=7/12x=9/7
你题目发错了吧
x/24*4+(24x-15x)/6-16=x/6+9x/6-16=10x/6-16=410x-96=2410x=120x=12
1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)÷(6÷7)=1÷2×3÷3×4÷4×5÷5×6÷6×7=1÷2×7=0.5×7=3.5明白请采纳,有新问题请求助,
再答: 再答:如果你说的是除以十五分之七,第一个是答案,如果你说的是除以七分之十五,第二个是答案
-0.2X/2=Y/3=Z/-7X/2=Y/33X=2YX=2/3YY/3=Z/-7-7Y=3ZZ=-7/3YX+Y+Z=(2/3Y+Y-7/3Y)/(Y+7/3Y)=(-2/3Y)/(10/3Y)=
12.8X÷7=8等式两边同时乘以7,可得:12.8X=56等式两边同时除以12.8可得:X=4.375综上的述,原方程的解为X=4.375.
即x/8-1+3=x/7x/7-x/8=3-1x/56=2x=2÷1/56x=112
x除以0.05除以2=(4500-x)除以0.02除以4化简成8x=10(4500-x)是对的,8x=45000-10x18x=45000x=2500
共有5种算法:1/(2/3)/4/(5/6/7/8)/9=2.81/(2/(3/4))/(5/6/7/8)/9=2.81/(2/(3/4/5)/6/7/(8/9))=2.81/(2/(3/4/(5/6