2x+3x+4=14; 7z-z+5=11; 8y-4y-12=-50

Question

2x+3x+4=14; 7z-z+5=11; 8y-4y-12=-50

Answer 1

2х=10;х=5
6z=6,z=1
4у=38, y=9,5

Comments

извиняюсь. 5x=10,x=2

Answer 2

1) 2х=10; х=5
2)6z=6; z=1
3)4y=38; y=9.5