0.48(x+30)+0.28(x+25)=-20.4

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Solution for 0.48(x+30)+0.28(x+25)=-20.4 equation: 


Simplifying
0.48(x + 30) + 0.28(x + 25) = -20.4

Reorder the terms:
0.48(30 + x) + 0.28(x + 25) = -20.4
(30 * 0.48 + x * 0.48) + 0.28(x + 25) = -20.4
(14.4 + 0.48x) + 0.28(x + 25) = -20.4

Reorder the terms:
14.4 + 0.48x + 0.28(25 + x) = -20.4
14.4 + 0.48x + (25 * 0.28 + x * 0.28) = -20.4
14.4 + 0.48x + (7 + 0.28x) = -20.4

Reorder the terms:
14.4 + 7 + 0.48x + 0.28x = -20.4

Combine like terms: 14.4 + 7 = 21.4
21.4 + 0.48x + 0.28x = -20.4

Combine like terms: 0.48x + 0.28x = 0.76x
21.4 + 0.76x = -20.4

Solving
21.4 + 0.76x = -20.4

Solving for variable 'x'.

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

Add '-21.4' to each side of the equation.
21.4 + -21.4 + 0.76x = -20.4 + -21.4

Combine like terms: 21.4 + -21.4 = 0.0
0.0 + 0.76x = -20.4 + -21.4
0.76x = -20.4 + -21.4

Combine like terms: -20.4 + -21.4 = -41.8
0.76x = -41.8

Divide each side by '0.76'.
x = -55

Simplifying
x = -55

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