tolong bantu saya terimakasih:)

1/4 (x - 8) = 8 + 2/3 x (= b)
1/4 x - 2 = 8 + 2/3 x
-2 - 8 = 2/3 x - 1/4 x
-10 = 8/12 x - 3/12 x
-10 = 5/12 x
x = - 10 ÷ 5/12
x = -10 × 12/5
x = - 24
b = -24

nilai dari b + 7 = -24 + 7 = -17