X-7=0.4(x+20)

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Solution for X-7=0.4(x+20) equation:


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

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

Reorder the terms:
-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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