3(21+7x)-57=-21x+75

Solution for 3(21+7x)-57=-21x+75 equation:

Simplifying
3(21 + 7x) + -57 = -21x + 75
(21 * 3 + 7x * 3) + -57 = -21x + 75
(63 + 21x) + -57 = -21x + 75

Reorder the terms:
63 + -57 + 21x = -21x + 75

Combine like terms: 63 + -57 = 6
6 + 21x = -21x + 75

Reorder the terms:
6 + 21x = 75 + -21x

Solving
6 + 21x = 75 + -21x

Solving for variable 'x'.

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

Add '21x' to each side of the equation.
6 + 21x + 21x = 75 + -21x + 21x

Combine like terms: 21x + 21x = 42x
6 + 42x = 75 + -21x + 21x

Combine like terms: -21x + 21x = 0
6 + 42x = 75 + 0
6 + 42x = 75

Add '-6' to each side of the equation.
6 + -6 + 42x = 75 + -6

Combine like terms: 6 + -6 = 0
0 + 42x = 75 + -6
42x = 75 + -6

Combine like terms: 75 + -6 = 69
42x = 69

Divide each side by '42'.
x = 1.642857143

Simplifying
x = 1.642857143