Question

кому не трудно......​

Answer 1

Ответ:

X=75/4

T=15

Объяснение:

Answer 2

Ответ:

( z + v )/15 - ( z - v )/3 = 1

Z + v - 5( z - v ) = 15

z + v - 5z + 5v = 15

6v - 4z = 15

••••••••••••••

( 2z - v )/6 - ( 3z + 2v )/3 = - 25

2z - v - 2( 3z + 2v ) = - 25•6

2z - v - 6z - 4v = - 150

- 5v - 4z = - 150

•••••••

5v + 4z = 150

6v - 4z = 15

11v = 165

v = 15

6•15 - 4z = 15

4z = 90 - 15

z = 75 : 4

z = 18,75

Ответ

z = 18,75

v = 15