Question

Use a transformation to solve the equation.

d – (–17) = –14

A.
d = –31

B.
d = –3

C.
d = 3

D.
d = 31

Answer 1

add to both sides -17

Answer 2

you will get d-(-17)+(-17)=-14+(-17
this is equal to d=-14-17=?

Answer 3

so the answer is -31?

Answer 4

@AlexandervonHumboldt2

Answer 5

Put -31 in the original equation and check it to see!

\[-31 - (-17) = -14\]
\[-31 + 17 = -14\]
\[-31 +17 - 17 = -14-17\]
\[-31 = -31\checkmark\]

You have a true statement when you put the proposed answer in the original equation, therefore it is correct.

Answer 6

oh, ok. thank you @whpalmer4 @AlexandervonHumboldt2