Question

Dacă 2+2=4 atunci 3+7=10 pai (56:3-9•89-4)-(89-34:4•56)=?

Answer 1

[tex]$ \ $ Ni se dau doua relatii care ne ajuta sa rezolvam problema: \\ \\ \left\{ \begin{array}{c} 2+2= 4 \\ 3+7 = 10 \end{array} \right \Rightarrow \left\{ \begin{array}{c} 4= 4 \\ 10 = 10 \end{array} \right |\Rightarrow $ $ ???? \\ \\ $Hmm... In fine... Sa trecem la problema:$ \\ \\ (56:3-9\cdot89-4)-(89-34:4\cdot56)=\\= \Big(18,(6)-801-4\Big)-\Big(89-34\cdot56:4\Big) =\\= \Big(18,(6)-805\Big)-\Big(89-1904:4\Big) = -786,(3)-\Big(89-476\Big) = \\ =-786,(3)-\Big(-387\Big) = -786,(3) + 387 = -399,(3)[/tex]