Heladio has 52 marbles . divide them into two groups so that for every 6 marbles in the first group there are 7 marbles in the second group.

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5