Question

how do you work this out?

2[(x+7)-9]=5(x-4)

Answer 1

\[2[x+7-9]=5(x+4)\]
\[2[x-2]=5x+20\]
\[2x-4=5x+20\]
\[2x-5x=20+4\]
\[-3x=24\]
\[x=24/-3\]
\[x=-8\]

Answer 2

2 (x-2) = 5 (x-4)
Expand out terms on both sides:
2 x-4 = 5 x-20
Add (4-5 x) to both sides:
-3 x = -16
Divide both sides by -3:
x = 16/3