2r+8(1-r)=-7r+11

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Solution for 2r+8(1-r)=-7r+11 equation:


Simplifying
2r + 8(1 + -1r) = -7r + 11
2r + (1 * 8 + -1r * 8) = -7r + 11
2r + (8 + -8r) = -7r + 11

Reorder the terms:
8 + 2r + -8r = -7r + 11

Combine like terms: 2r + -8r = -6r
8 + -6r = -7r + 11

Reorder the terms:
8 + -6r = 11 + -7r

Solving
8 + -6r = 11 + -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.
8 + -6r + 7r = 11 + -7r + 7r

Combine like terms: -6r + 7r = 1r
8 + 1r = 11 + -7r + 7r

Combine like terms: -7r + 7r = 0
8 + 1r = 11 + 0
8 + 1r = 11

Add '-8' to each side of the equation.
8 + -8 + 1r = 11 + -8

Combine like terms: 8 + -8 = 0
0 + 1r = 11 + -8
1r = 11 + -8

Combine like terms: 11 + -8 = 3
1r = 3

Divide each side by '1'.
r = 3

Simplifying
r = 3

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