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Which of the following number lines represents the solution to d/-2+5=7?

Which of the following number lines represents the solution to d/-2+5=7?-example-1
User Minh Dao
by
8.3k points

1 Answer

5 votes

Answer:

Option D

Explanation:

Solve for d

d has to be isolated and made the subject of the equation:


(d)/(-2) + 5 = 7


(d)/(-2) = 7 - 5


(d)/(-2) = 2


(d)/(-2) = (2)/(1)

Cross-multiplication is applied:


(d)(1) = (-2)(2)

∴ d =
-4

Since d is equal to
-4, then the coloured dot should be placed on
-4 on the number line


∴Option D

User Hpityu
by
8.2k points

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