x-50=.8(x+100)

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Solution for x-50=.8(x+100) equation:


Simplifying
x + -50 = 0.8(x + 100)

Reorder the terms:
-50 + x = 0.8(x + 100)

Reorder the terms:
-50 + x = 0.8(100 + x)
-50 + x = (100 * 0.8 + x * 0.8)
-50 + x = (80 + 0.8x)

Solving
-50 + x = 80 + 0.8x

Solving for variable 'x'.

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

Add '-0.8x' to each side of the equation.
-50 + x + -0.8x = 80 + 0.8x + -0.8x

Combine like terms: x + -0.8x = 0.2x
-50 + 0.2x = 80 + 0.8x + -0.8x

Combine like terms: 0.8x + -0.8x = 0.0
-50 + 0.2x = 80 + 0.0
-50 + 0.2x = 80

Add '50' to each side of the equation.
-50 + 50 + 0.2x = 80 + 50

Combine like terms: -50 + 50 = 0
0 + 0.2x = 80 + 50
0.2x = 80 + 50

Combine like terms: 80 + 50 = 130
0.2x = 130

Divide each side by '0.2'.
x = 650

Simplifying
x = 650

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