2(r-80)+2r=1600

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Solution for 2(r-80)+2r=1600 equation:


Simplifying
2(r + -80) + 2r = 1600

Reorder the terms:
2(-80 + r) + 2r = 1600
(-80 * 2 + r * 2) + 2r = 1600
(-160 + 2r) + 2r = 1600

Combine like terms: 2r + 2r = 4r
-160 + 4r = 1600

Solving
-160 + 4r = 1600

Solving for variable 'r'.

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

Add '160' to each side of the equation.
-160 + 160 + 4r = 1600 + 160

Combine like terms: -160 + 160 = 0
0 + 4r = 1600 + 160
4r = 1600 + 160

Combine like terms: 1600 + 160 = 1760
4r = 1760

Divide each side by '4'.
r = 440

Simplifying
r = 440

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