7x-4(2-3x)=-21

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Solution for 7x-4(2-3x)=-21 equation:


Simplifying
7x + -4(2 + -3x) = -21
7x + (2 * -4 + -3x * -4) = -21
7x + (-8 + 12x) = -21

Reorder the terms:
-8 + 7x + 12x = -21

Combine like terms: 7x + 12x = 19x
-8 + 19x = -21

Solving
-8 + 19x = -21

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 19x = -21 + 8

Combine like terms: -8 + 8 = 0
0 + 19x = -21 + 8
19x = -21 + 8

Combine like terms: -21 + 8 = -13
19x = -13

Divide each side by '19'.
x = -0.6842105263

Simplifying
x = -0.6842105263

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