Jakob simplified the expression as shown.
(6.7x-.4x--2)
6.7x-3-3.4x-1-2x-2
(6.7x-3.4x-2x)+(-3-1-2)
1.3x-6
what was jakob's error in subtracting the expressions?
o he used the commutative property incorrectly.
he used the distributive property incorrectly.
o he used the associative property incorrectly.
he simplified the x coefficients incorrectly.

he used the distributive property incorrectly

Step-by-step explanation:

(6.7x-3)-(3.4x-1)-(2x-2)

should equal:

6.7x-3+3.4x+1-2x+2

however jakob put:

6.7x-3-3.4x-1-2x-2

this shows that he distributed the negative sign incorrectly

89

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