3+(a + 4)(8 -b)
(a=5) (b=6)

21

Step-by-step explanation:

3 + (a + 4)(8 - b)

a = 5

b = 6

3 + (5 + 4)(8 - 6)

3 + (9)(2)

3 + 18 = 21

u rich

step-by-step explanation:

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