10(9-d)=10d

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Solution for 10(9-d)=10d equation:


Simplifying
10(9 + -1d) = 10d
(9 * 10 + -1d * 10) = 10d
(90 + -10d) = 10d

Solving
90 + -10d = 10d

Solving for variable 'd'.

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

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

Combine like terms: -10d + -10d = -20d
90 + -20d = 10d + -10d

Combine like terms: 10d + -10d = 0
90 + -20d = 0

Add '-90' to each side of the equation.
90 + -90 + -20d = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -20d = 0 + -90
-20d = 0 + -90

Combine like terms: 0 + -90 = -90
-20d = -90

Divide each side by '-20'.
d = 4.5

Simplifying
d = 4.5

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