10-4d=90

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Solution for 10-4d=90 equation: 


Simplifying
10 + -4d = 90

Solving
10 + -4d = 90

Solving for variable 'd'.

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

Add '-10' to each side of the equation.
10 + -10 + -4d = 90 + -10

Combine like terms: 10 + -10 = 0
0 + -4d = 90 + -10
-4d = 90 + -10

Combine like terms: 90 + -10 = 80
-4d = 80

Divide each side by '-4'.
d = -20

Simplifying
d = -20

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