If b=-2 then -2x+-2 =-12 making x equal 5 ,5 times -2 equals -10 plus negative 2 equals -12
This is quite easy if you follow steps:
lets start by subtracting the whole numbers
2-2=0
9/10-1/3
first make the denominator same,
lets keep it 30, now change numerators
27/30-10/30
=17/30
You can use the ad that is faster and show you the steps is called
Relative dating of rock layers i think
10,045 ft if its going down 16,045 if up multiple 250 with 12 = 3000
