350=520-r

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Solution for 350=520-r equation:


Simplifying
350 = 520 + -1r

Solving
350 = 520 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
350 + r = 520 + -1r + r

Combine like terms: -1r + r = 0
350 + r = 520 + 0
350 + r = 520

Add '-350' to each side of the equation.
350 + -350 + r = 520 + -350

Combine like terms: 350 + -350 = 0
0 + r = 520 + -350
r = 520 + -350

Combine like terms: 520 + -350 = 170
r = 170

Simplifying
r = 170

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