找出 X:
1) x/a + x/b = 1
2) (x-m)/(x+n) = (x+n)/(x-m)
3) 1/x = 1/y + 1/z
4) x/a + x/b + x/c =1
5) n=(a-x)/(a+x)
6) (1+x/a)(1/a-x)=(x-a)(1-x/a)
7) C= (nE)/(R+nr),找出 n;
8)E= (FR)/(p+r)d ,找出 r:
找出 X:
1) x/a + x/b = 1
2) (x-m)/(x+n) = (x+n)/(x-m)
3) 1/x = 1/y + 1/z
4) x/a + x/b + x/c =1
5) n=(a-x)/(a+x)
6) (1+x/a)(1/a-x)=(x-a)(1-x/a)
7) C= (nE)/(R+nr),找出 n;
8)E= (FR)/(p+r)d ,找出 r: