Answer:
x = -8
Step-by-step explanation:
x + (a + c) = a
given a = 6 and c = 8
x + (6 + 8) = 6
x + 14 = 6
x = 6 - 14
X + (a+c)= a
given = ( a-6,c-8
X + (14)= 6
X = 6 - 14
X = -8