Question

a/b=13/4 Formand proporti derivate AFLATI A si b din a-b =27 ,a+b=34,5a+2b=365

Answer 1

a/b=13/4   b=4a/13
a-4a/13=27
13a-4a=351
9a=351
a=39
b=39-27=12

a/b=13/4   b=4a/13
a+b=34
a+4a/13=34
13a+4a=442
17a=442
a=26
b=34-26=8

a/b=13/4   b=4a/13
5a+2b=365
5a+8a/13=365
65a+8a=4745
73a=4745
a=65
b=4*65/13=20