4x-3(4x+21)=-143

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Solution for 4x-3(4x+21)=-143 equation:


Simplifying
4x + -3(4x + 21) = -143

Reorder the terms:
4x + -3(21 + 4x) = -143
4x + (21 * -3 + 4x * -3) = -143
4x + (-63 + -12x) = -143

Reorder the terms:
-63 + 4x + -12x = -143

Combine like terms: 4x + -12x = -8x
-63 + -8x = -143

Solving
-63 + -8x = -143

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + -8x = -143 + 63

Combine like terms: -63 + 63 = 0
0 + -8x = -143 + 63
-8x = -143 + 63

Combine like terms: -143 + 63 = -80
-8x = -80

Divide each side by '-8'.
x = 10

Simplifying
x = 10

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