161=x+2x+(x+21)

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Solution for 161=x+2x+(x+21) equation:


Simplifying
161 = x + 2x + (x + 21)

Reorder the terms:
161 = x + 2x + (21 + x)

Remove parenthesis around (21 + x)
161 = x + 2x + 21 + x

Reorder the terms:
161 = 21 + x + 2x + x

Combine like terms: x + 2x = 3x
161 = 21 + 3x + x

Combine like terms: 3x + x = 4x
161 = 21 + 4x

Solving
161 = 21 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
161 + -4x = 21 + 4x + -4x

Combine like terms: 4x + -4x = 0
161 + -4x = 21 + 0
161 + -4x = 21

Add '-161' to each side of the equation.
161 + -161 + -4x = 21 + -161

Combine like terms: 161 + -161 = 0
0 + -4x = 21 + -161
-4x = 21 + -161

Combine like terms: 21 + -161 = -140
-4x = -140

Divide each side by '-4'.
x = 35

Simplifying
x = 35

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