25(100d-1200)=400

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Solution for 25(100d-1200)=400 equation:


Simplifying
25(100d + -1200) = 400

Reorder the terms:
25(-1200 + 100d) = 400
(-1200 * 25 + 100d * 25) = 400
(-30000 + 2500d) = 400

Solving
-30000 + 2500d = 400

Solving for variable 'd'.

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

Add '30000' to each side of the equation.
-30000 + 30000 + 2500d = 400 + 30000

Combine like terms: -30000 + 30000 = 0
0 + 2500d = 400 + 30000
2500d = 400 + 30000

Combine like terms: 400 + 30000 = 30400
2500d = 30400

Divide each side by '2500'.
d = 12.16

Simplifying
d = 12.16

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