7-3[2x-1]=-20

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Solution for 7-3[2x-1]=-20 equation:


Simplifying
7 + -3[2x + -1] = -20

Reorder the terms:
7 + -3[-1 + 2x] = -20
7 + [-1 * -3 + 2x * -3] = -20
7 + [3 + -6x] = -20

Combine like terms: 7 + 3 = 10
10 + -6x = -20

Solving
10 + -6x = -20

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + -6x = -20 + -10

Combine like terms: 10 + -10 = 0
0 + -6x = -20 + -10
-6x = -20 + -10

Combine like terms: -20 + -10 = -30
-6x = -30

Divide each side by '-6'.
x = 5

Simplifying
x = 5

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