Question

Ambele please!Dau coroana la primul!!

Answer 1

Răspuns:

18) A+b =56

A:b=5, 2

=>a=5xb+2

Inlocuim in relatie

5b +2 +b=56

6b +2=56

6 x b =56-2

6x b =54

B=54:6

B=9

A =5x b +2

A= 5x 9+2

A=45+2

A=47

19) a-b =80

A:b = 12,3

=> a=12x b +3

Inlocuim in relatie :

12 b +3 - b =80

11b +3 =80

11x b =80-3

11 x b =77

B= 77 :11

B=7

A =12 x b +3

A=12x 7+3

A =84+3

A=87

Sper ca te-am ajutat. Coronita?

Answer 2

Răspuns:

18. a+b=56

a:b=5 rest 2 => a=5×b+2

5b+2+b=56

6b+2=56

6b=56-2

6b=54

b=54:6

b=9

a= a+9=56

a= 56-9

a=47

19. a-b=80

a:b=12 rest 3 => a=b×12+3

12×b+3-b=80

11b+3=80

11b=80-3

11b=77

b=77:11

b=7

a= 12 × 7 +3

a=84+3

a=87