-d+-4d+9d-13d-7d+-18=4

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Solution for -d+-4d+9d-13d-7d+-18=4 equation:


Simplifying
-1d + -4d + 9d + -13d + -7d + -18 = 4

Reorder the terms:
-18 + -1d + -4d + 9d + -13d + -7d = 4

Combine like terms: -1d + -4d = -5d
-18 + -5d + 9d + -13d + -7d = 4

Combine like terms: -5d + 9d = 4d
-18 + 4d + -13d + -7d = 4

Combine like terms: 4d + -13d = -9d
-18 + -9d + -7d = 4

Combine like terms: -9d + -7d = -16d
-18 + -16d = 4

Solving
-18 + -16d = 4

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '18' to each side of the equation.
-18 + 18 + -16d = 4 + 18

Combine like terms: -18 + 18 = 0
0 + -16d = 4 + 18
-16d = 4 + 18

Combine like terms: 4 + 18 = 22
-16d = 22

Divide each side by '-16'.
d = -1.375

Simplifying
d = -1.375

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