20r+140=0

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Solution for 20r+140=0 equation: 


Simplifying
20r + 140 = 0

Reorder the terms:
140 + 20r = 0

Solving
140 + 20r = 0

Solving for variable 'r'.

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

Add '-140' to each side of the equation.
140 + -140 + 20r = 0 + -140

Combine like terms: 140 + -140 = 0
0 + 20r = 0 + -140
20r = 0 + -140

Combine like terms: 0 + -140 = -140
20r = -140

Divide each side by '20'.
r = -7

Simplifying
r = -7

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