Question

решите уравнения
15х - 1 =29
9у+73=109
67-z:28=52

Answer 1

15x - 1 =29    
15x =29+1
15x =30
x=30/15
x=2

9y+73=109
9y=109-73
9y=36
y=36/9
y=4

67-z/28=52
z/28=67-52
z/28=15
z=15*28
z=420

Answer 2

1)15х-1=29
15х=29+1
15х=30
х=2
2)9у+73=109
9у=109-73
9у=36
у=4
3)67-z:28=52
z:28=67-52
z:28=15
z=15*28
z=420