Use the distributive property to eliminate parentheses.
... 2x - (3/4)·2x - (3/4)·80
... 2x -(3/2)x - 60 . . . . . simplify the terms involving fractions
... x(2 - 3/2) - 60 . . . . . identify the x coefficients you need to add together
... (1/2)x - 60 . . . . . . . . simplified form
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You have not shown an equation, so there is nothing here to solve.