345+x=642

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Solution for 345+x=642 equation: 


Simplifying
345 + x = 642

Solving
345 + x = 642

Solving for variable 'x'.

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

Add '-345' to each side of the equation.
345 + -345 + x = 642 + -345

Combine like terms: 345 + -345 = 0
0 + x = 642 + -345
x = 642 + -345

Combine like terms: 642 + -345 = 297
x = 297

Simplifying
x = 297

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