690+x=820

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Solution for 690+x=820 equation: 


Simplifying
690 + x = 820

Solving
690 + x = 820

Solving for variable 'x'.

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

Add '-690' to each side of the equation.
690 + -690 + x = 820 + -690

Combine like terms: 690 + -690 = 0
0 + x = 820 + -690
x = 820 + -690

Combine like terms: 820 + -690 = 130
x = 130

Simplifying
x = 130

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