Question

se considera proportia a pe b = 13 pe 4. formand proportii derivate,det nr a si b
a) a-b=27
b) a+b=34

Answer 1

a/b=13/4⇒a=13k si b=4k
13k-4k=27⇒9k=27⇒k=3
13*3=39
4*3=12
39-12=27
13k+4k=34⇒17k=34⇒k=2
13*2=26
4*2=8
26+8=34