12=x+0.55(x-4)

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Solution for 12=x+0.55(x-4) equation:


Simplifying
12 = x + 0.55(x + -4)

Reorder the terms:
12 = x + 0.55(-4 + x)
12 = x + (-4 * 0.55 + x * 0.55)
12 = x + (-2.2 + 0.55x)

Reorder the terms:
12 = -2.2 + x + 0.55x

Combine like terms: x + 0.55x = 1.55x
12 = -2.2 + 1.55x

Solving
12 = -2.2 + 1.55x

Solving for variable 'x'.

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

Add '-1.55x' to each side of the equation.
12 + -1.55x = -2.2 + 1.55x + -1.55x

Combine like terms: 1.55x + -1.55x = 0.00
12 + -1.55x = -2.2 + 0.00
12 + -1.55x = -2.2

Add '-12' to each side of the equation.
12 + -12 + -1.55x = -2.2 + -12

Combine like terms: 12 + -12 = 0
0 + -1.55x = -2.2 + -12
-1.55x = -2.2 + -12

Combine like terms: -2.2 + -12 = -14.2
-1.55x = -14.2

Divide each side by '-1.55'.
x = 9.161290323

Simplifying
x = 9.161290323

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