30-4(20-2x)=12(x-6.5)

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Solution for 30-4(20-2x)=12(x-6.5) equation:


Simplifying
30 + -4(20 + -2x) = 12(x + -6.5)
30 + (20 * -4 + -2x * -4) = 12(x + -6.5)
30 + (-80 + 8x) = 12(x + -6.5)

Combine like terms: 30 + -80 = -50
-50 + 8x = 12(x + -6.5)

Reorder the terms:
-50 + 8x = 12(-6.5 + x)
-50 + 8x = (-6.5 * 12 + x * 12)
-50 + 8x = (-78 + 12x)

Solving
-50 + 8x = -78 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
-50 + 8x + -12x = -78 + 12x + -12x

Combine like terms: 8x + -12x = -4x
-50 + -4x = -78 + 12x + -12x

Combine like terms: 12x + -12x = 0
-50 + -4x = -78 + 0
-50 + -4x = -78

Add '50' to each side of the equation.
-50 + 50 + -4x = -78 + 50

Combine like terms: -50 + 50 = 0
0 + -4x = -78 + 50
-4x = -78 + 50

Combine like terms: -78 + 50 = -28
-4x = -28

Divide each side by '-4'.
x = 7

Simplifying
x = 7

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