X-7=(x+20)*.4

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Solution for X-7=(x+20)*.4 equation:


Simplifying
X + -7 = (x + 20) * 0.4

Reorder the terms:
-7 + X = (x + 20) * 0.4

Reorder the terms:
-7 + X = (20 + x) * 0.4

Reorder the terms for easier multiplication:
-7 + X = 0.4(20 + x)
-7 + X = (20 * 0.4 + x * 0.4)
-7 + X = (8 + 0.4x)

Solving
-7 + X = 8 + 0.4x

Solving for variable 'X'.

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

Add '7' to each side of the equation.
-7 + 7 + X = 8 + 7 + 0.4x

Combine like terms: -7 + 7 = 0
0 + X = 8 + 7 + 0.4x
X = 8 + 7 + 0.4x

Combine like terms: 8 + 7 = 15
X = 15 + 0.4x

Simplifying
X = 15 + 0.4x

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