8r-4r+2=7r-r

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Solution for 8r-4r+2=7r-r equation:


Simplifying
8r + -4r + 2 = 7r + -1r

Reorder the terms:
2 + 8r + -4r = 7r + -1r

Combine like terms: 8r + -4r = 4r
2 + 4r = 7r + -1r

Combine like terms: 7r + -1r = 6r
2 + 4r = 6r

Solving
2 + 4r = 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
2 + 4r + -6r = 6r + -6r

Combine like terms: 4r + -6r = -2r
2 + -2r = 6r + -6r

Combine like terms: 6r + -6r = 0
2 + -2r = 0

Add '-2' to each side of the equation.
2 + -2 + -2r = 0 + -2

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

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

Divide each side by '-2'.
r = 1

Simplifying
r = 1

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