Answer:
Step-by-step explanation:
[tex](\frac{7}{12}) ^{-4} *(\frac{7}{12}) ^{3x} =(\frac{7}{12}) ^{5} \\\\(\frac{7}{12}) ^{-4+3x} =(\frac{7}{12}) ^{5}[/tex]
same base;
-4+3x=5
or,3x=5+4
or,x=9/3
x=3
