96,3 - ( 20,25 + 6p ) : 2,5 = 77,4

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Let's solve this step by step:

Start by simplifying the expression inside the parentheses: 20 + 25 = 45Next, distribute the -6 to both terms inside the parentheses: -6p -6 = - 6p 45 = -270Now, add the result of step 2 to 45: 45 - 270 = -225Now, divide this result by 2.5: -225 / 2.5 = -90Finally, subtract this result from 96.3: 96.3 - (-90) = 96.3 + 90 = 186.3

So, the solution to the equation 96.3 - (20 + 25 + 6p) / 2.5 = 77.4 is 186.3.