3(7x-21)=3

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

Simplifying
3(7x + -21) = 3

Reorder the terms:
3(-21 + 7x) = 3
(-21 * 3 + 7x * 3) = 3
(-63 + 21x) = 3

Solving
-63 + 21x = 3

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + 21x = 3 + 63

Combine like terms: -63 + 63 = 0
0 + 21x = 3 + 63
21x = 3 + 63

Combine like terms: 3 + 63 = 66
21x = 66

Divide each side by '21'.
x = 3.142857143

Simplifying
x = 3.142857143