3z-14/2=-1 3n+75/5=6n+42/5 4/x-x+8/2x=5/6

Question

3z-14/2=-1 3n+75/5=6n+42/5 4/x-x+8/2x=5/6

Answer 1

3z - 14/2 =-1
3z - 7= -1
3z=-1+7
3z=6

3n+75/5=6n+42/5
3n-6n= 42/5-75/5
-3n=-33/5
3n=33/5
n= 33
---- : 3
5
n = 33. 1
---- × ---
5. 3
n=33×1
-------
5×3
n= 11
---
5

Comments

это не так должно, тема:Рациональные уравнения