.4x+3=2x+15

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Solution for .4x+3=2x+15 equation:


Simplifying
0.4x + 3 = 2x + 15

Reorder the terms:
3 + 0.4x = 2x + 15

Reorder the terms:
3 + 0.4x = 15 + 2x

Solving
3 + 0.4x = 15 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
3 + 0.4x + -2x = 15 + 2x + -2x

Combine like terms: 0.4x + -2x = -1.6x
3 + -1.6x = 15 + 2x + -2x

Combine like terms: 2x + -2x = 0
3 + -1.6x = 15 + 0
3 + -1.6x = 15

Add '-3' to each side of the equation.
3 + -3 + -1.6x = 15 + -3

Combine like terms: 3 + -3 = 0
0 + -1.6x = 15 + -3
-1.6x = 15 + -3

Combine like terms: 15 + -3 = 12
-1.6x = 12

Divide each side by '-1.6'.
x = -7.5

Simplifying
x = -7.5

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