Question

What is the value of x in this simplified expression 7^-9x 7^-3=7^x

Answer 1

Answer:

x = -12

Step-by-step explanation:

${7}^{ - 9} \times {7}^{ - 3} = {7}^{x}$

the base is equal so we can add the number above

${7}^{ - 9 + ( - 3)} = {7}^{x}$

${7}^{ - 12} = {7}^{x}$

the base is equal so is the number above

-12 = x