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  • Utilizator Brainly
2014-03-01T18:51:48+02:00
A+b=56
a/b=3/4 ⇒ 3b=4a ⇒ 3b-4a=0
a+b=56 ⇒ 4a+4b=224; adunam cele 2 ecuatii:
4a+4b+3b-4a=224 ⇒ 7b=224, b=32, a=24
2 5 2
2014-03-01T19:19:17+02:00
A+b=56
a/b=3/4
a=3/4b
3/4b+b=56
3b+4b/4=56
7b/4=56
b=56 * 4/7
b=32
a+32=56
a=56-32
a=24