375=3+(2)*561+-2r

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Solution for 375=3+(2)*561+-2r equation:


Simplifying
375 = 3 + (2) * 561 + -2r

Multiply 2 * 561
375 = 3 + 1122 + -2r

Combine like terms: 3 + 1122 = 1125
375 = 1125 + -2r

Solving
375 = 1125 + -2r

Solving for variable 'r'.

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

Add '2r' to each side of the equation.
375 + 2r = 1125 + -2r + 2r

Combine like terms: -2r + 2r = 0
375 + 2r = 1125 + 0
375 + 2r = 1125

Add '-375' to each side of the equation.
375 + -375 + 2r = 1125 + -375

Combine like terms: 375 + -375 = 0
0 + 2r = 1125 + -375
2r = 1125 + -375

Combine like terms: 1125 + -375 = 750
2r = 750

Divide each side by '2'.
r = 375

Simplifying
r = 375

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