[tex]a = 19 + (50 - 7 \times 4) \div 11 \\ \: \: \: \: = 19 + (50 - 28) \div 11 \\ \: \: \: \: = 19 + 22 \div 11 = 19 + 2 = > a = 21[/tex]
[tex]b = 135 - [25 - (12 + 28) \div 2] \times 6 = 135 - (25 - 40 \div 2) \times 6 = 135 - (25 - 20) \times 6 = 135 - 5 \times 6 =135 - 30 = > b = 105[/tex]
[tex]a = 19 + (50 - 7 \times 4) \div 11 \\ \: \: \: \: = 19 + (50 - 28) \div 11 \\ \: \: \: \: = 19 + 22 \div 11 = 19 + 2 = > a = 21[/tex]
[tex]a \times 5 = b = > 21 \times 5 = 105 \: (adevarat)[/tex]
