数学简算1/29({1/19[1/9(X-2)+17]+28}=1

问题描述:

数学简算1/29({1/19[1/9(X-2)+17]+28}=1

1/29({1/19[1/9(X-2)+17]+28}=1
1/19[1/9(X-2)+17]+28=29
1/19[1/9(X-2)+17]=29-28
1/19[1/9(X-2)+17]=1
1/9(X-2)+17=19
1/9(X-2)=19-17
1/9(X-2)=2
X-2=18
X=20