105=30+5(4x-9)

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Solution for 105=30+5(4x-9) equation:


Simplifying
105 = 30 + 5(4x + -9)

Reorder the terms:
105 = 30 + 5(-9 + 4x)
105 = 30 + (-9 * 5 + 4x * 5)
105 = 30 + (-45 + 20x)

Combine like terms: 30 + -45 = -15
105 = -15 + 20x

Solving
105 = -15 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
105 + -20x = -15 + 20x + -20x

Combine like terms: 20x + -20x = 0
105 + -20x = -15 + 0
105 + -20x = -15

Add '-105' to each side of the equation.
105 + -105 + -20x = -15 + -105

Combine like terms: 105 + -105 = 0
0 + -20x = -15 + -105
-20x = -15 + -105

Combine like terms: -15 + -105 = -120
-20x = -120

Divide each side by '-20'.
x = 6

Simplifying
x = 6

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