Exercise 26 Page 85

To solve the equation we have to isolate n on one side of the equation. By dividing both sides of the equation by -8, we can remove the coefficient from n.

-8n=-64

DivEqn

.LHS /(-8).=.RHS /(-8).

-8n/-8=-64/-8

DivNegNeg

- a/- b=a/b

n=64/8

CalcQuot

Calculate quotient

n=8

To check that we have the correct solution, we can substitute n=8 into the original equation.

-8n=-64

Substitute

n= 8

-8( 8)? =-64

MultNegPos

(- a)b = - ab

-64=-64

Since both sides are equal, we can conclude that n=8 is the correct solution.