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830-[(6×4+6×6):a]+322=1146

Răspuns :

[tex]830 - [(6 \times 4 + 6 \times 6) \div a] + 322 = 1146[/tex]

[tex]830 - (24 + 36) \div a = 1146 - 322[/tex]

[tex]830 - 60 \div a = 824[/tex]

[tex] - 60 \div a = 824 - 830[/tex]

[tex] - 60 \div a = - 6 \: | \times ( - 1)[/tex]

[tex]60 \div a = 6[/tex]

[tex]a = 60 \div 6[/tex]

[tex]a = 10[/tex]