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ax5+63:9x100-(18x15-11x23)=703

Răspuns :

Răspuns:

ax5+63:9x100-(18x15-11x23)=703

a×5+7×100-(270-253)=703

a×5+700-17=703

a×5+700=703+17

a×5+700=720

a×5=720-700

a×5=20

a=20:5

a=4