(0.1x-27)+(0.3x-45)=90

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Solution for (0.1x-27)+(0.3x-45)=90 equation:


Simplifying
(0.1x + -27) + (0.3x + -45) = 90

Reorder the terms:
(-27 + 0.1x) + (0.3x + -45) = 90

Remove parenthesis around (-27 + 0.1x)
-27 + 0.1x + (0.3x + -45) = 90

Reorder the terms:
-27 + 0.1x + (-45 + 0.3x) = 90

Remove parenthesis around (-45 + 0.3x)
-27 + 0.1x + -45 + 0.3x = 90

Reorder the terms:
-27 + -45 + 0.1x + 0.3x = 90

Combine like terms: -27 + -45 = -72
-72 + 0.1x + 0.3x = 90

Combine like terms: 0.1x + 0.3x = 0.4x
-72 + 0.4x = 90

Solving
-72 + 0.4x = 90

Solving for variable 'x'.

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

Add '72' to each side of the equation.
-72 + 72 + 0.4x = 90 + 72

Combine like terms: -72 + 72 = 0
0 + 0.4x = 90 + 72
0.4x = 90 + 72

Combine like terms: 90 + 72 = 162
0.4x = 162

Divide each side by '0.4'.
x = 405

Simplifying
x = 405

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