20(7-d)+11d=113

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Solution for 20(7-d)+11d=113 equation:


Simplifying
20(7 + -1d) + 11d = 113
(7 * 20 + -1d * 20) + 11d = 113
(140 + -20d) + 11d = 113

Combine like terms: -20d + 11d = -9d
140 + -9d = 113

Solving
140 + -9d = 113

Solving for variable 'd'.

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

Add '-140' to each side of the equation.
140 + -140 + -9d = 113 + -140

Combine like terms: 140 + -140 = 0
0 + -9d = 113 + -140
-9d = 113 + -140

Combine like terms: 113 + -140 = -27
-9d = -27

Divide each side by '-9'.
d = 3

Simplifying
d = 3

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