1=10+9r

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Solution for 1=10+9r equation:


Simplifying
1 = 10 + 9r

Solving
1 = 10 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
1 + -9r = 10 + 9r + -9r

Combine like terms: 9r + -9r = 0
1 + -9r = 10 + 0
1 + -9r = 10

Add '-1' to each side of the equation.
1 + -1 + -9r = 10 + -1

Combine like terms: 1 + -1 = 0
0 + -9r = 10 + -1
-9r = 10 + -1

Combine like terms: 10 + -1 = 9
-9r = 9

Divide each side by '-9'.
r = -1

Simplifying
r = -1

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