0.1(7)+x=0.4(7+x)

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Solution for 0.1(7)+x=0.4(7+x) equation: 


Simplifying
0.1(7) + x = 0.4(7 + x)

Multiply 0.1 * 7
0.7 + x = 0.4(7 + x)
0.7 + x = (7 * 0.4 + x * 0.4)
0.7 + x = (2.8 + 0.4x)

Solving
0.7 + x = 2.8 + 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.
0.7 + x + -0.4x = 2.8 + 0.4x + -0.4x

Combine like terms: x + -0.4x = 0.6x
0.7 + 0.6x = 2.8 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
0.7 + 0.6x = 2.8 + 0.0
0.7 + 0.6x = 2.8

Add '-0.7' to each side of the equation.
0.7 + -0.7 + 0.6x = 2.8 + -0.7

Combine like terms: 0.7 + -0.7 = 0.0
0.0 + 0.6x = 2.8 + -0.7
0.6x = 2.8 + -0.7

Combine like terms: 2.8 + -0.7 = 2.1
0.6x = 2.1

Divide each side by '0.6'.
x = 3.5

Simplifying
x = 3.5

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