3[7x-3]=159

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Solution for 3[7x-3]=159 equation:


Simplifying
3[7x + -3] = 159

Reorder the terms:
3[-3 + 7x] = 159
[-3 * 3 + 7x * 3] = 159
[-9 + 21x] = 159

Solving
-9 + 21x = 159

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 21x = 159 + 9

Combine like terms: -9 + 9 = 0
0 + 21x = 159 + 9
21x = 159 + 9

Combine like terms: 159 + 9 = 168
21x = 168

Divide each side by '21'.
x = 8

Simplifying
x = 8

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