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What is the solution to the linear equation?

d – 10 – 2d + 7 = 8 + d – 10 – 3d

A. d = –5
B. d = –1
C. d = 1
D. d = 5

Respuesta :

d==-1      ...............................

Hi!

To solve this, first, we should group like terms together.

1d - 2d - 10 + 7 = 8 - 10 + 1d - 3d

Simplify

-1d - 10 + 7 = 8 - 10 - 2d

-1d - 3 = -2 - 2d

Add 3 to both sides.

-1d - 3 + 3 = -2 + 3 - 2d

-1d = 1 - 2d

Add 2d to both sides.

-1d + 2d = 1 - 2d + 2d

1d = 1

Divide by 1 on both sides.

1d/1 = 1/1

d = 1

The answer is d = 1

Hope this helps!