8-(4r+7)=5(r+6)-2

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Solution for 8-(4r+7)=5(r+6)-2 equation:


Simplifying
8 + -1(4r + 7) = 5(r + 6) + -2

Reorder the terms:
8 + -1(7 + 4r) = 5(r + 6) + -2
8 + (7 * -1 + 4r * -1) = 5(r + 6) + -2
8 + (-7 + -4r) = 5(r + 6) + -2

Combine like terms: 8 + -7 = 1
1 + -4r = 5(r + 6) + -2

Reorder the terms:
1 + -4r = 5(6 + r) + -2
1 + -4r = (6 * 5 + r * 5) + -2
1 + -4r = (30 + 5r) + -2

Reorder the terms:
1 + -4r = 30 + -2 + 5r

Combine like terms: 30 + -2 = 28
1 + -4r = 28 + 5r

Solving
1 + -4r = 28 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
1 + -4r + -5r = 28 + 5r + -5r

Combine like terms: -4r + -5r = -9r
1 + -9r = 28 + 5r + -5r

Combine like terms: 5r + -5r = 0
1 + -9r = 28 + 0
1 + -9r = 28

Add '-1' to each side of the equation.
1 + -1 + -9r = 28 + -1

Combine like terms: 1 + -1 = 0
0 + -9r = 28 + -1
-9r = 28 + -1

Combine like terms: 28 + -1 = 27
-9r = 27

Divide each side by '-9'.
r = -3

Simplifying
r = -3

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