3(3r+1)-(r-1)=6(x+10)

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Solution for 3(3r+1)-(r-1)=6(x+10) equation:


Simplifying
3(3r + 1) + -1(r + -1) = 6(x + 10)

Reorder the terms:
3(1 + 3r) + -1(r + -1) = 6(x + 10)
(1 * 3 + 3r * 3) + -1(r + -1) = 6(x + 10)
(3 + 9r) + -1(r + -1) = 6(x + 10)

Reorder the terms:
3 + 9r + -1(-1 + r) = 6(x + 10)
3 + 9r + (-1 * -1 + r * -1) = 6(x + 10)
3 + 9r + (1 + -1r) = 6(x + 10)

Reorder the terms:
3 + 1 + 9r + -1r = 6(x + 10)

Combine like terms: 3 + 1 = 4
4 + 9r + -1r = 6(x + 10)

Combine like terms: 9r + -1r = 8r
4 + 8r = 6(x + 10)

Reorder the terms:
4 + 8r = 6(10 + x)
4 + 8r = (10 * 6 + x * 6)
4 + 8r = (60 + 6x)

Solving
4 + 8r = 60 + 6x

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 + 8r = 60 + -4 + 6x

Combine like terms: 4 + -4 = 0
0 + 8r = 60 + -4 + 6x
8r = 60 + -4 + 6x

Combine like terms: 60 + -4 = 56
8r = 56 + 6x

Divide each side by '8'.
r = 7 + 0.75x

Simplifying
r = 7 + 0.75x

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