Answer:
A
Step-by-step explanation:
It's A because she subtracted a negative and that only make a bigger negative where she should have added
1/7 - 4
1/7 -28/7
<u>multiply</u> the base and <u>add </u>the exponents
x = 1/6
3x + 4 = 9x + 3
3x + 1 = 9x
1 = 6x
1/6 = x