X+(X-20)+(X-25)+(X-28)=47
1个回答
X+(X-20)+(X-25)+(X-28)=47
X+X-20+X-25+X-28=47
4X=47+20+25+28
4X=120
X=120÷4
X=30
相关问题
求下列算式的答案.是简便计算.204x25 97x24 28x51+47x51+25x51 49x33+35x33-74
88-7x=5x-20 4(4x-11)=3(22-2x) 9.4乘[1.28-(x-0.31)]=0.47
(x-23)+(x-25)+(x-26)+(x-28)=x
4x(25x65+25x28)简便运算
{20%x+25}/{x-20%x-25}=5/6
{20%x+25}/{x-20%x-25}=5/6
x-2/5x-20x=28
15x²-47xy+28y²=0 求X/Y的值
解方程.4x+1.6=8.4 20x÷2=60 x−25x=12 [28/x=0.40.12].
(28-2x)(20-x)=494