Verify that:- -20+ [3/-5+(-7)/(-10)] = [-20+ 3/-5]+ -7/-10

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.