Step-by-step explanation:
name the missing term as x.
--> 7^16 / 7^12 = 7^ -18 / x
cross multiply to find the value of x.
7^16 × X = 7^12 × 7^ -18
now use this property :
a^x × a^y = a^x+y
7^16 × X = 7^12 + -18
7^16 × X = 7^-6
divide both sides by 7^16 to solve for X.
X = 7^-6/ 7^16
Property for division :
a^x÷a^y = a^x-y
X = 7^-6-16
X = 7^-22
