Question

vă rog ajutatima dau coroana primului răspuns ​

Answer 1

Răspuns:

a) a+b-3x=56

a+b-3*(ori)14=56

a+b-42=56

a+b=56+42

a+b=98

b) 11a+11b+56+x=1170

11a+11b+56+14=1170

11a+11b=1170-56-14

11a+11b=1100

11a+11b=1100/:11(impartim toata ecuatia la 11)

a+b=100

c) 7a+7b+7*14=700

7a+7b+98=700

7a+7b=602/:7

a+b=86