|b - 12 | = 15 . how do i solve this equation?

We have b - 12 = 15 or b - 12 = - 15;

Then b = 12 + 15 or b = 12 - 15;

Finally, b = 27 or b = -3;

The solutions are 27; -3.

Absolute value has a positive and neg. Answer

B-12=15

B= 15+12

B= 27

Now the negative

B-12=-15

B=-15+12

B= -3

Answer is

B= 27,-3

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: