3x(21)=4x-4(4x+5)

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Solution for 3x(21)=4x-4(4x+5) equation:


Simplifying
3x(21) = 4x + -4(4x + 5)

Reorder the terms for easier multiplication:
3 * 21x = 4x + -4(4x + 5)

Multiply 3 * 21
63x = 4x + -4(4x + 5)

Reorder the terms:
63x = 4x + -4(5 + 4x)
63x = 4x + (5 * -4 + 4x * -4)
63x = 4x + (-20 + -16x)

Reorder the terms:
63x = -20 + 4x + -16x

Combine like terms: 4x + -16x = -12x
63x = -20 + -12x

Solving
63x = -20 + -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.
63x + 12x = -20 + -12x + 12x

Combine like terms: 63x + 12x = 75x
75x = -20 + -12x + 12x

Combine like terms: -12x + 12x = 0
75x = -20 + 0
75x = -20

Divide each side by '75'.
x = -0.2666666667

Simplifying
x = -0.2666666667

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