Question

wyznacz c

2(c+1)=3a

2/c=a/4+b/4

1/a-3/2c=2/c

Answer 1

2(c+1)=3a

2c+2=3a | -2

2c=3a-2| :2

c= 3a-2/2

 

2/c=a/4+b/4 | x4

8/c=a+b |1/8

c=1/8a + 1/8a

 

1/a-3/2c=2/c | x 2c

2c/a-3=4 |x a

2c-3a=4a | + 3a

2c=7a | :2

c=3,5a