3r-5=7r-25

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Solution for 3r-5=7r-25 equation:


Simplifying
3r + -5 = 7r + -25

Reorder the terms:
-5 + 3r = 7r + -25

Reorder the terms:
-5 + 3r = -25 + 7r

Solving
-5 + 3r = -25 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-5 + 3r + -7r = -25 + 7r + -7r

Combine like terms: 3r + -7r = -4r
-5 + -4r = -25 + 7r + -7r

Combine like terms: 7r + -7r = 0
-5 + -4r = -25 + 0
-5 + -4r = -25

Add '5' to each side of the equation.
-5 + 5 + -4r = -25 + 5

Combine like terms: -5 + 5 = 0
0 + -4r = -25 + 5
-4r = -25 + 5

Combine like terms: -25 + 5 = -20
-4r = -20

Divide each side by '-4'.
r = 5

Simplifying
r = 5

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