0.40(300-d)+0.75d=190

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Solution for 0.40(300-d)+0.75d=190 equation: 


Simplifying
0.40(300 + -1d) + 0.75d = 190
(300 * 0.40 + -1d * 0.40) + 0.75d = 190
(120 + -0.4d) + 0.75d = 190

Combine like terms: -0.4d + 0.75d = 0.35d
120 + 0.35d = 190

Solving
120 + 0.35d = 190

Solving for variable 'd'.

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

Add '-120' to each side of the equation.
120 + -120 + 0.35d = 190 + -120

Combine like terms: 120 + -120 = 0
0 + 0.35d = 190 + -120
0.35d = 190 + -120

Combine like terms: 190 + -120 = 70
0.35d = 70

Divide each side by '0.35'.
d = 200

Simplifying
d = 200

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