Răspuns :
a+b=1010
a-10=b:4 =>b=4x(a-10) sau b=4a-40
a+4a-40=1010
5a=1010+40
5a=1050 =>a=210
b=1010-210 =>b=800
a-10=b:4 =>b=4x(a-10) sau b=4a-40
a+4a-40=1010
5a=1010+40
5a=1050 =>a=210
b=1010-210 =>b=800