3(x+21)+x=61

Solution for 3(x+21)+x=61 equation:

Simplifying
3(x + 21) + x = 61

Reorder the terms:
3(21 + x) + x = 61
(21 * 3 + x * 3) + x = 61
(63 + 3x) + x = 61

Combine like terms: 3x + x = 4x
63 + 4x = 61

Solving
63 + 4x = 61

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 + 4x = 61 + -63

Combine like terms: 63 + -63 = 0
0 + 4x = 61 + -63
4x = 61 + -63

Combine like terms: 61 + -63 = -2
4x = -2

Divide each side by '4'.
x = -0.5

Simplifying
x = -0.5