8r-4-7r=2-8

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


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

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

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

Combine like terms: 2 + -8 = -6
-4 + 1r = -6

Solving
-4 + 1r = -6

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + 1r = -6 + 4

Combine like terms: -4 + 4 = 0
0 + 1r = -6 + 4
1r = -6 + 4

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

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

Simplifying
r = -2

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