0.1(2x)+0.2x+1=4

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Solution for 0.1(2x)+0.2x+1=4 equation: 


Simplifying
0.1(2x) + 0.2x + 1 = 4

Remove parenthesis around (2x)
0.1 * 2x + 0.2x + 1 = 4

Multiply 0.1 * 2
0.2x + 0.2x + 1 = 4

Reorder the terms:
1 + 0.2x + 0.2x = 4

Combine like terms: 0.2x + 0.2x = 0.4x
1 + 0.4x = 4

Solving
1 + 0.4x = 4

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 0.4x = 4 + -1

Combine like terms: 1 + -1 = 0
0 + 0.4x = 4 + -1
0.4x = 4 + -1

Combine like terms: 4 + -1 = 3
0.4x = 3

Divide each side by '0.4'.
x = 7.5

Simplifying
x = 7.5

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