2-4(1+3x)=-21

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Solution for 2-4(1+3x)=-21 equation:


Simplifying
2 + -4(1 + 3x) = -21
2 + (1 * -4 + 3x * -4) = -21
2 + (-4 + -12x) = -21

Combine like terms: 2 + -4 = -2
-2 + -12x = -21

Solving
-2 + -12x = -21

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + -12x = -21 + 2

Combine like terms: -2 + 2 = 0
0 + -12x = -21 + 2
-12x = -21 + 2

Combine like terms: -21 + 2 = -19
-12x = -19

Divide each side by '-12'.
x = 1.583333333

Simplifying
x = 1.583333333

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