How do you solve -5n-8(1+7n)=-8?

3 Answers
Sep 29, 2017

n=0

Explanation:

-5n-8(1-7n)=-8
Open the brackets
-5n-8+56n=-8
Add both side 8
-5n-8+56n+8=-8+8
51n=0
n=0

Sep 29, 2017

n=0

Explanation:

"distribute bracket and collect like terms"

-5n-8-56n=-8

rArr-61n-8=-8

"add 8 to both sides"

-61ncancel(-8)cancel(+8)=-8+8

rArr-61n=0

rArrn=0

color(blue)"As a check"

Substitute this value into the equation and if both sides are equal then it is the solution.

"left "=0-8(1+0)=0-8=-8=" right"

rArrn=0" is the solution"

Sep 29, 2017

n=0

Explanation:

-5n-8(1+7n)=-8

Expanding:
-5n-8(1)-8(7n)=-8
=-5n-8-56n=-8

Adding 8 to both sides:
=-5ncancel(-8)cancel(+8)-56n=cancel(-8)cancel(+8)
=61n=0

Dividing both sides by 61:
(cancel61n)/cancel61=0/61=0

rArrn=0