Răspuns :
a;b→ numere
a+b=284=>a=284-b
a-b=(a+b)-248=>a-b=284-248=36
284-b-b=36
284-2b=36
284-36=2b
248=2b=>b=[tex]\dfrac{248}{2}=124[/tex]
a=284-124=160
Verificare:
160+124=284
160-124=36
a+b=284=>a=284-b
a-b=(a+b)-248=>a-b=284-248=36
284-b-b=36
284-2b=36
284-36=2b
248=2b=>b=[tex]\dfrac{248}{2}=124[/tex]
a=284-124=160
Verificare:
160+124=284
160-124=36
a+b=284
a-b+248=284
a-b=284-248
a-b=36
a=36+b
Inlocuim in prima ecuatie:
36+b+b=284
2*b=284-36
2*b=248
b=248/2
b=124
a=124+36
a=160
a-b+248=284
a-b=284-248
a-b=36
a=36+b
Inlocuim in prima ecuatie:
36+b+b=284
2*b=284-36
2*b=248
b=248/2
b=124
a=124+36
a=160