Question

in doua lazi sunt 73 kg mere.intr- o lada sunt cu 13 kg mai mult decat in cealalta.Cate kg de mere sunt in fiecare lada?

Answer 1

a+a+13=73
2a= 73-13
2a= 60
a = 60:2
a= 30

a+13 = 30+13=43

Answer 2

a+b=73kg.m
a=b+13
-----------------
a=?b=?

(a+13)+b=73kg.m
a+b=73-13
a+b=60
60:2=30
a=30+13
a=43
b=30

a+b=73kg.m
43+30=73kg.m