Answer:
x =-2
Step-by-step explanation:
log 15 = log(7 - 4x)
The terms inside the log functions must be the same
15 = 7 -4x
Subtract 7 from each side
15-7 = 7-4x-7
8 = -4x
Divide each side by -4
8/-4 =-4x/-4
-2 =x
x = -2
