0.8d+0.84(3000-d)=0.54(7000)

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Solution for 0.8d+0.84(3000-d)=0.54(7000) equation: 


Simplifying
0.8d + 0.84(3000 + -1d) = 0.54(7000)
0.8d + (3000 * 0.84 + -1d * 0.84) = 0.54(7000)
0.8d + (2520 + -0.84d) = 0.54(7000)

Reorder the terms:
2520 + 0.8d + -0.84d = 0.54(7000)

Combine like terms: 0.8d + -0.84d = -0.04d
2520 + -0.04d = 0.54(7000)

Multiply 0.54 * 7000
2520 + -0.04d = 3780

Solving
2520 + -0.04d = 3780

Solving for variable 'd'.

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

Add '-2520' to each side of the equation.
2520 + -2520 + -0.04d = 3780 + -2520

Combine like terms: 2520 + -2520 = 0
0 + -0.04d = 3780 + -2520
-0.04d = 3780 + -2520

Combine like terms: 3780 + -2520 = 1260
-0.04d = 1260

Divide each side by '-0.04'.
d = -31500

Simplifying
d = -31500

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