0.4(x+9)=12

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Solution for 0.4(x+9)=12 equation:


Simplifying
0.4(x + 9) = 12

Reorder the terms:
0.4(9 + x) = 12
(9 * 0.4 + x * 0.4) = 12
(3.6 + 0.4x) = 12

Solving
3.6 + 0.4x = 12

Solving for variable 'x'.

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

Add '-3.6' to each side of the equation.
3.6 + -3.6 + 0.4x = 12 + -3.6

Combine like terms: 3.6 + -3.6 = 0.0
0.0 + 0.4x = 12 + -3.6
0.4x = 12 + -3.6

Combine like terms: 12 + -3.6 = 8.4
0.4x = 8.4

Divide each side by '0.4'.
x = 21

Simplifying
x = 21

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