2.8=0.4x+1.2

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Solution for 2.8=0.4x+1.2 equation: 


Simplifying
2.8 = 0.4x + 1.2

Reorder the terms:
2.8 = 1.2 + 0.4x

Solving
2.8 = 1.2 + 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 = 1.2 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
2.8 + -0.4x = 1.2 + 0.0
2.8 + -0.4x = 1.2

Add '-2.8' to each side of the equation.
2.8 + -2.8 + -0.4x = 1.2 + -2.8

Combine like terms: 2.8 + -2.8 = 0.0
0.0 + -0.4x = 1.2 + -2.8
-0.4x = 1.2 + -2.8

Combine like terms: 1.2 + -2.8 = -1.6
-0.4x = -1.6

Divide each side by '-0.4'.
x = 4

Simplifying
x = 4

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