2.8=0.4(x-2.5)

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Solution for 2.8=0.4(x-2.5) equation: 


Simplifying
2.8 = 0.4(x + -2.5)

Reorder the terms:
2.8 = 0.4(-2.5 + x)
2.8 = (-2.5 * 0.4 + x * 0.4)
2.8 = (-1 + 0.4x)

Solving
2.8 = -1 + 0.4x

Solving for variable 'x'.

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

Add '-0.4x' to each side of the equation.
2.8 + -0.4x = -1 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
2.8 + -0.4x = -1 + 0.0
2.8 + -0.4x = -1

Add '-2.8' to each side of the equation.
2.8 + -2.8 + -0.4x = -1 + -2.8

Combine like terms: 2.8 + -2.8 = 0.0
0.0 + -0.4x = -1 + -2.8
-0.4x = -1 + -2.8

Combine like terms: -1 + -2.8 = -3.8
-0.4x = -3.8

Divide each side by '-0.4'.
x = 9.5

Simplifying
x = 9.5

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