[tex] (64÷8+10×6+b)÷(74÷4)-(6×10-53)=7[/tex]
[tex](8 + 60 + b) \div 18.5 - (60 - 53) = 7[/tex]
[tex](68 + b) \times \frac{37}{2} - 7 = 7[/tex]
[tex](68 + b) \times \frac{2}{37} - 7 = 7 [/tex]
[tex] \frac{136}{37} + \frac{2}{37}b - 7 = 7 [/tex]
[tex] - \frac{123}{37} + \frac{2}{37}b = 7[/tex]
[tex] - 123 + 2b = 259[/tex]
[tex]2b = 259 + 123[/tex]
[tex]2b = 382[/tex]
[tex]b = 191[/tex]
