258=5r+5(r-51)

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Solution for 258=5r+5(r-51) equation:


Simplifying
258 = 5r + 5(r + -51)

Reorder the terms:
258 = 5r + 5(-51 + r)
258 = 5r + (-51 * 5 + r * 5)
258 = 5r + (-255 + 5r)

Reorder the terms:
258 = -255 + 5r + 5r

Combine like terms: 5r + 5r = 10r
258 = -255 + 10r

Solving
258 = -255 + 10r

Solving for variable 'r'.

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

Add '-10r' to each side of the equation.
258 + -10r = -255 + 10r + -10r

Combine like terms: 10r + -10r = 0
258 + -10r = -255 + 0
258 + -10r = -255

Add '-258' to each side of the equation.
258 + -258 + -10r = -255 + -258

Combine like terms: 258 + -258 = 0
0 + -10r = -255 + -258
-10r = -255 + -258

Combine like terms: -255 + -258 = -513
-10r = -513

Divide each side by '-10'.
r = 51.3

Simplifying
r = 51.3

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