Răspuns :

[(5+3)×7+(4+3+27)]×7=630

(8×7+34)×7=630

(56+34)×7=630

90×7=630

630=630 deci da

Adevărat:

[tex]\left[\left(35\div \:7+21\div \:7\right)\times \:7+\left(4+9\div \:3+27\right)\right]\times \:7[/tex]

[tex]=8\times \:7+\left(4+9\div \:3+27\right) =8\times \:7+34=56+34 =90[/tex]

[tex]=90\times \:7 =630[/tex]

Sper că te-am ajutat!

Succes!