.5x+.3(x-.4)=.7x

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Solution for .5x+.3(x-.4)=.7x equation:


Simplifying
0.5x + 0.3(x + -0.4) = 0.7x

Reorder the terms:
0.5x + 0.3(-0.4 + x) = 0.7x
0.5x + (-0.4 * 0.3 + x * 0.3) = 0.7x
0.5x + (-0.12 + 0.3x) = 0.7x

Reorder the terms:
-0.12 + 0.5x + 0.3x = 0.7x

Combine like terms: 0.5x + 0.3x = 0.8x
-0.12 + 0.8x = 0.7x

Solving
-0.12 + 0.8x = 0.7x

Solving for variable 'x'.

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

Add '-0.7x' to each side of the equation.
-0.12 + 0.8x + -0.7x = 0.7x + -0.7x

Combine like terms: 0.8x + -0.7x = 0.1x
-0.12 + 0.1x = 0.7x + -0.7x

Combine like terms: 0.7x + -0.7x = 0.0
-0.12 + 0.1x = 0.0

Add '0.12' to each side of the equation.
-0.12 + 0.12 + 0.1x = 0.0 + 0.12

Combine like terms: -0.12 + 0.12 = 0.00
0.00 + 0.1x = 0.0 + 0.12
0.1x = 0.0 + 0.12

Combine like terms: 0.0 + 0.12 = 0.12
0.1x = 0.12

Divide each side by '0.1'.
x = 1.2

Simplifying
x = 1.2

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