43+62+57+r=55

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Solution for 43+62+57+r=55 equation:


Simplifying
43 + 62 + 57 + r = 55

Combine like terms: 43 + 62 = 105
105 + 57 + r = 55

Combine like terms: 105 + 57 = 162
162 + r = 55

Solving
162 + r = 55

Solving for variable 'r'.

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

Add '-162' to each side of the equation.
162 + -162 + r = 55 + -162

Combine like terms: 162 + -162 = 0
0 + r = 55 + -162
r = 55 + -162

Combine like terms: 55 + -162 = -107
r = -107

Simplifying
r = -107

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