Question

2 )daca a+ b =108 si a-b =42 sa se afle a si b ..sub forma de segmente

Answer 1

a+b=108==>a=108-b
a-b=42==>108-b-b=42
108-2b=42
-2b=42-108
-2b=-66/×(-1)
b=33
a=108-33
a=75