Question

The expression 7 + 2(x – 3) + 5x is simplified correctly in the correct order. Which of the steps has an incorrect justification?

step a
step c
step d
step b

Answer 1

step c should be the right answer i think

Answer 2

it is step c

Explanation:

7 + 2(x - 3) + 5x

= 7 + 2x - 6 + 5x

= 7 - 6 + 2x + 5x

= 1 + 7x