Question

Is there an error in this problem explain pls do all

Answer 1

Answer:

C

Step-by-step explanation:

Answer 2

Answer:

14

Step-by-step explanation:

you did it wrong

this is the one thats not wrong:

7(6+4(−10+9))

=(7)(6+4(−10+9))

=(7)(6)+(7)(4(−10+9))

=42−28

=14