7r+10=3r+500

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Solution for 7r+10=3r+500 equation:


Simplifying
7r + 10 = 3r + 500

Reorder the terms:
10 + 7r = 3r + 500

Reorder the terms:
10 + 7r = 500 + 3r

Solving
10 + 7r = 500 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
10 + 7r + -3r = 500 + 3r + -3r

Combine like terms: 7r + -3r = 4r
10 + 4r = 500 + 3r + -3r

Combine like terms: 3r + -3r = 0
10 + 4r = 500 + 0
10 + 4r = 500

Add '-10' to each side of the equation.
10 + -10 + 4r = 500 + -10

Combine like terms: 10 + -10 = 0
0 + 4r = 500 + -10
4r = 500 + -10

Combine like terms: 500 + -10 = 490
4r = 490

Divide each side by '4'.
r = 122.5

Simplifying
r = 122.5

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