Question

Jakob simplified the expression as shown.

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

Answer 1

Answer:The answer is D, He simplified the x coefficients incorrectly

Explanation:

I hope this helps!

Answer 2

he used the distributive property incorrectly

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