What's the answer to - 7=7d-8

These are the steps to find for the value of d:

-7 = 7d - 8

-7 + 8 = 7d - 8 + 8 (add 8 on both sides)

1 = 7d (combined liked terms)

1 : 7 = d (inverse operation)

0.14 = d or d = 0.14 (rounded to the nearest hundredths)

To check your answer just substitute the value of d in the equation;

-7 = 7d - 8

-7 = 7 (0.14) - 8

-7 = 1 - 8

-7 = - 7

Isolate the "d"

7d=1

d = 1/7

1/7 is your answer