.2(X+100)+1.4=84

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Solution for .2(X+100)+1.4=84 equation: 


Simplifying
0.2(X + 100) + 1.4 = 84

Reorder the terms:
0.2(100 + X) + 1.4 = 84
(100 * 0.2 + X * 0.2) + 1.4 = 84
(20 + 0.2X) + 1.4 = 84

Reorder the terms:
20 + 1.4 + 0.2X = 84

Combine like terms: 20 + 1.4 = 21.4
21.4 + 0.2X = 84

Solving
21.4 + 0.2X = 84

Solving for variable 'X'.

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

Add '-21.4' to each side of the equation.
21.4 + -21.4 + 0.2X = 84 + -21.4

Combine like terms: 21.4 + -21.4 = 0.0
0.0 + 0.2X = 84 + -21.4
0.2X = 84 + -21.4

Combine like terms: 84 + -21.4 = 62.6
0.2X = 62.6

Divide each side by '0.2'.
X = 313

Simplifying
X = 313

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