Question 151695
8 – {3x + 9y – (2x – y) + 8x + 5y}  ... Start with the given equation.



8 – {3x + 9y  -2x + y + 8x + 5y}  ... Distribute the negative. So {{{-(2x - y)}}} becomes {{{-2x+y}}}



8 – {9x + 15y} ... Combine like terms



8 –9x - 15y ... Distribute the negative. So {{{-(9x + 15y)}}} becomes {{{-9x - 15y}}}



-9x - 15y + 8 ... Rearrange the terms.



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Answer:


So 8 – {3x + 9y – (2x – y) + 8x + 5y} = -9x - 15y + 8