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  • Utilizator Brainly
2014-02-27T19:55:56+02:00
A-b=135
a+7=3b ⇒ a=3b-7
3b-7-b=135 ⇒ 2b=142, b=71
a=b+135, a=71+135, a=206
2 5 2
2014-02-27T20:06:33+02:00
A-b=135
a=7+3xb
Inlocuim:
7+3xb -b=135=>2xb=128=>b=64=>a=400+7=407
2 3 2