0.7x-0.7(4-x)=3.5

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Solution for 0.7x-0.7(4-x)=3.5 equation: 


Simplifying
0.7x + -0.7(4 + -1x) = 3.5
0.7x + (4 * -0.7 + -1x * -0.7) = 3.5
0.7x + (-2.8 + 0.7x) = 3.5

Reorder the terms:
-2.8 + 0.7x + 0.7x = 3.5

Combine like terms: 0.7x + 0.7x = 1.4x
-2.8 + 1.4x = 3.5

Solving
-2.8 + 1.4x = 3.5

Solving for variable 'x'.

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

Add '2.8' to each side of the equation.
-2.8 + 2.8 + 1.4x = 3.5 + 2.8

Combine like terms: -2.8 + 2.8 = 0.0
0.0 + 1.4x = 3.5 + 2.8
1.4x = 3.5 + 2.8

Combine like terms: 3.5 + 2.8 = 6.3
1.4x = 6.3

Divide each side by '1.4'.
x = 4.5

Simplifying
x = 4.5

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