8r-1=7r+2

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Solution for 8r-1=7r+2 equation:


Simplifying
8r + -1 = 7r + 2

Reorder the terms:
-1 + 8r = 7r + 2

Reorder the terms:
-1 + 8r = 2 + 7r

Solving
-1 + 8r = 2 + 7r

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.
-1 + 8r + -7r = 2 + 7r + -7r

Combine like terms: 8r + -7r = 1r
-1 + 1r = 2 + 7r + -7r

Combine like terms: 7r + -7r = 0
-1 + 1r = 2 + 0
-1 + 1r = 2

Add '1' to each side of the equation.
-1 + 1 + 1r = 2 + 1

Combine like terms: -1 + 1 = 0
0 + 1r = 2 + 1
1r = 2 + 1

Combine like terms: 2 + 1 = 3
1r = 3

Divide each side by '1'.
r = 3

Simplifying
r = 3

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