.15d+.07(1000-d)=130

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Solution for .15d+.07(1000-d)=130 equation:


Simplifying
0.15d + 0.07(1000 + -1d) = 130
0.15d + (1000 * 0.07 + -1d * 0.07) = 130
0.15d + (70 + -0.07d) = 130

Reorder the terms:
70 + 0.15d + -0.07d = 130

Combine like terms: 0.15d + -0.07d = 0.08d
70 + 0.08d = 130

Solving
70 + 0.08d = 130

Solving for variable 'd'.

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

Add '-70' to each side of the equation.
70 + -70 + 0.08d = 130 + -70

Combine like terms: 70 + -70 = 0
0 + 0.08d = 130 + -70
0.08d = 130 + -70

Combine like terms: 130 + -70 = 60
0.08d = 60

Divide each side by '0.08'.
d = 750

Simplifying
d = 750

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