Question

Решите уравнение: 2/3z +5/6z-7/9z=1/2

Answer 1

2/3z+5/6z-7/9z=1/2
4/6z+5/6z-7/9z=1/2
9/6z-7/9z=1/2
3/2z-7/9z=1/2
27/18z-14/18z=1/2
13/18z=1/2
13/18z=9/18
z=9/18÷13/18
z=9/18×18/13
z=9/13

Answer 2

y -5/7y=2/9

Answer 3

y -5/7y=2/9; 7/7y-5/7y=2/9; 2/7y=2/9; у=2/9:2/7; у=2/9*7/2; у=7/9.

Answer 4

z -8/15=1/3; z-8/15=5/15; z=5/15+8/15; z=13/15.

Answer 5

Надеюсь, понятно :)

Answer 6

Все понятно. Спасибо!