(4x+5)*9=13*8
36х+45=104
36х=104-45
36х=59
х=59:36
х=1 23/36
(4x+5):13=8/9
(4x+5)=8/9*13
(4x+5)=104/9
4х=104/9-5
4х=104/9-45/9
4х=59/9
х=59/9:4
x=59/9*1/4
x=59/36=1 целая 23/36
(4x+5)*9=13*8
36х+45=104
36х=104-45
36х=59
х=59:36
х=1 23/36
(4x+5):13=8/9
(4x+5)=8/9*13
(4x+5)=104/9
4х=104/9-5
4х=104/9-45/9
4х=59/9
х=59/9:4
x=59/9*1/4
x=59/36=1 целая 23/36