r-1=6.9

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Solution for r-1=6.9 equation:


Simplifying
r + -1 = 6.9

Reorder the terms:
-1 + r = 6.9

Solving
-1 + r = 6.9

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + r = 6.9 + 1

Combine like terms: -1 + 1 = 0
0 + r = 6.9 + 1
r = 6.9 + 1

Combine like terms: 6.9 + 1 = 7.9
r = 7.9

Simplifying
r = 7.9

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