Question

What’s the answer to this question below. A b c or d

Answer 1

Answer:

$a=0$

Step-by-step explanation:

The given expression is;

$(\frac{1}{7})^{3a+3} =343^{a-1}$

This implies that;

$7^{-1(3a+3)} =7^{3(a-1)}$

Equate the exponents;

$-1(3a+3) =3(a-1)$

Expand;

$-3a-3 =3a-3$

$-3a-3a =-3+3$

$-6a=0$

$a=0$

Answer 2

Answer:

The right choice is (2) 0

Step-by-step explanation:

7 ^(3a-3) = 7^(3a-3)

= -3a -3 = 3a -3

= -3a = 3a

-3a -3a = 0

-6a = 0

a= 0