3r+2(r-20)=265

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Solution for 3r+2(r-20)=265 equation:


Simplifying
3r + 2(r + -20) = 265

Reorder the terms:
3r + 2(-20 + r) = 265
3r + (-20 * 2 + r * 2) = 265
3r + (-40 + 2r) = 265

Reorder the terms:
-40 + 3r + 2r = 265

Combine like terms: 3r + 2r = 5r
-40 + 5r = 265

Solving
-40 + 5r = 265

Solving for variable 'r'.

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

Add '40' to each side of the equation.
-40 + 40 + 5r = 265 + 40

Combine like terms: -40 + 40 = 0
0 + 5r = 265 + 40
5r = 265 + 40

Combine like terms: 265 + 40 = 305
5r = 305

Divide each side by '5'.
r = 61

Simplifying
r = 61

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