[(0.30*30)+(0.10*40)+(0.40*30)+(0.20*20)]=

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Solution for [(0.30*30)+(0.10*40)+(0.40*30)+(0.20*20)]= equation: 


Simplifying
[(0.30 * 30) + (0.10 * 40) + (0.40 * 30) + (0.20 * 20)] = 0

Multiply 0.30 * 30
[(9) + (0.10 * 40) + (0.40 * 30) + (0.20 * 20)] = 0
[9 + (0.10 * 40) + (0.40 * 30) + (0.20 * 20)] = 0

Multiply 0.10 * 40
[9 + (4) + (0.40 * 30) + (0.20 * 20)] = 0
[9 + 4 + (0.40 * 30) + (0.20 * 20)] = 0

Multiply 0.40 * 30
[9 + 4 + (12) + (0.20 * 20)] = 0
[9 + 4 + 12 + (0.20 * 20)] = 0

Multiply 0.20 * 20
[9 + 4 + 12 + (4)] = 0
[9 + 4 + 12 + 4] = 0

Combine like terms: 9 + 4 = 13
[13 + 12 + 4] = 0

Combine like terms: 13 + 12 = 25
[25 + 4] = 0

Combine like terms: 25 + 4 = 29
[29] = 0
29 = 0

Solving
29 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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