Subtract:

–57 – 19 –16

Question 13 options:

A)
–76

B)
–35

C)
–73

D)
–92

it's answer is D -92

As -57-19-16= -92

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,