Question

Afla numarul necunoscut : a) 5 247-2 158-a=1918 3 122+b+1 099=7 200 , b) 4 175+a-3 643=1 989 9 206-b+1 302=10 000

Answer 1

a)5247-2158-a=1918

3089-a=1918

a=3089-1918

a=1171

3122+b+1099=7200

b+1099=7200-3122

b+1099=4078

b=4078-1099

b=2979

b)4175+a-3643=1989

4175+a=1989+3643

4175+a=5632

a=5632-4175

a=1457

9206-b+1302=10000

9206-b=10000-1302

9206-b=8698

b=9206-8698

b=508