Solve each of the following equations for x. (a) 5x-7=28 (b) 12-5x= x+30 (c) 5(x+2)= 1-3x
зx-y=-5 x+2y=3

With finding limits of multi variable !

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.