4-(-3x)+21=6

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Solution for 4-(-3x)+21=6 equation:


Simplifying
4 + -1(-3x) + 21 = 6

Remove parenthesis around (-3x)
4 + -1 * -3x + 21 = 6

Multiply -1 * -3
4 + 3x + 21 = 6

Reorder the terms:
4 + 21 + 3x = 6

Combine like terms: 4 + 21 = 25
25 + 3x = 6

Solving
25 + 3x = 6

Solving for variable 'x'.

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

Add '-25' to each side of the equation.
25 + -25 + 3x = 6 + -25

Combine like terms: 25 + -25 = 0
0 + 3x = 6 + -25
3x = 6 + -25

Combine like terms: 6 + -25 = -19
3x = -19

Divide each side by '3'.
x = -6.333333333

Simplifying
x = -6.333333333

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