123+321-1234+x=420

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Solution for 123+321-1234+x=420 equation:


Simplifying
123 + 321 + -1234 + x = 420

Combine like terms: 123 + 321 = 444
444 + -1234 + x = 420

Combine like terms: 444 + -1234 = -790
-790 + x = 420

Solving
-790 + x = 420

Solving for variable 'x'.

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

Add '790' to each side of the equation.
-790 + 790 + x = 420 + 790

Combine like terms: -790 + 790 = 0
0 + x = 420 + 790
x = 420 + 790

Combine like terms: 420 + 790 = 1210
x = 1210

Simplifying
x = 1210

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