Question

Vă rog ajutor la exercițiul 19

Answer 1

$a+b=180\\\\a=3*b\\deci 3*b+b=180\\4*b=180\\b=180:4\\ b=45\\a=3*45\\a=135$

Answer 2

a,b-doua numere necunoscute.

a+b=180

a=3×b

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3×b+b=180

4×b=180⇒b=180:4⇒b=45;

a=3×b⇒a=3×45⇒a=135.

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