Răspuns: a= ( 5+ 5:5+ 2-2:2) x 2
a= ( 5+ 1 + 2- 1) x2
a=( 6+2-1) x2
a= (8-1) x2
a= 7x2, a= 14
b=16:( 25:5-12:3)
b= 16:(5-4)
b= 16:1, b= 16
c= 2-27:(5x5+2:1)
c= 2-27:(25+2)
c= 2-27:27
c= 2-1, c=1
