Question

efetue a operaçao: (2x+3)-(4x-9)=

Answer 1

$(2x + 3) - (4x - 9) \\ \\ \\ 2x + 3 - 4x + 9 \\ \\ -2x + 12 (-1) \\ \\ 2x - 12 = 0 \\ \\ 2x = 12 \\ \\ x = \dfrac{12}{2}} \\ \\ x = 6$

Answer 2

(2x+3) -4x+9=
2x+3-4x+9=
2x-4x=-9-3
-2x=-12
x=6