45:(х - 5)=15 (3х= 7) х 2=32 (10 - х) : 1 = 1

Question

45:(х - 5)=15
(3х= 7) х 2=32
(10 - х) : 1 = 1

Answer 1

45:(х-5)=15
45:х-45:5=15
45:х-9=15
5х=15
х=15:5
х=3

Answer 2

45x -225-15=0
45x-240=0
45x=240
x= 5 целая 15/45