Răspuns :
a * (b + 5) = 336
a * b = 301
a * b + 5 * a = 336
301 + 5a = 336
5a = 336 - 301
a = 35 : 5
a = 7
7 * b = 301
b = 301 : 7
b = 43
a * b = 301
a * b + 5 * a = 336
301 + 5a = 336
5a = 336 - 301
a = 35 : 5
a = 7
7 * b = 301
b = 301 : 7
b = 43
a×(b+5)=336
a×b=301
-----------------
a×(b+5)=336
ab+5a=336
301+5a=336
5a=336-301
5a=35
a=35:5
a=7
a×b=301
-----------------
a×(b+5)=336
ab+5a=336
301+5a=336
5a=336-301
5a=35
a=35:5
a=7