-15=9y+1-7r

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Solution for -15=9y+1-7r equation:


Simplifying
-15 = 9y + 1 + -7r

Reorder the terms:
-15 = 1 + -7r + 9y

Solving
-15 = 1 + -7r + 9y

Solving for variable 'r'.

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

Add '7r' to each side of the equation.
-15 + 7r = 1 + -7r + 7r + 9y

Combine like terms: -7r + 7r = 0
-15 + 7r = 1 + 0 + 9y
-15 + 7r = 1 + 9y

Add '15' to each side of the equation.
-15 + 15 + 7r = 1 + 15 + 9y

Combine like terms: -15 + 15 = 0
0 + 7r = 1 + 15 + 9y
7r = 1 + 15 + 9y

Combine like terms: 1 + 15 = 16
7r = 16 + 9y

Divide each side by '7'.
r = 2.285714286 + 1.285714286y

Simplifying
r = 2.285714286 + 1.285714286y

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