Question

Solve each equation 7|9n+10|=70

Answer 1

Hi

7|9n+10|=70

First divide both sides by 7

7(|9n+10|)/7= 70/7

|9n+10|=10

Now we need to find the absolute value

|9n+10=10

We know that either 9n+10=10 or 9n=10=-10

We have to possibility

The first possibility is

9n+10=10

Now we need to subtract 10 to both sides so we can find the value for n for the possibility 1

9n+10-10=10-10

9n=0

Now divide both sides by 9 so we can find the value for N

9n/9=0/9

n= 0

Now let's go for possibility 2

9n+10=-10

We gonna do the same thing for possibility 2 by subtract 10 from both sides

9n+10-10=10-10

9n=-20

Divide both sides by 9 so we can find the value for N

9n/9=-20/9

n= -20/9

Answer ; N=0 or N=-20/9

I hope that's help and good luck :)