5r+(r+15)-3(r+2)=0

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Solution for 5r+(r+15)-3(r+2)=0 equation:


Simplifying
5r + (r + 15) + -3(r + 2) = 0

Reorder the terms:
5r + (15 + r) + -3(r + 2) = 0

Remove parenthesis around (15 + r)
5r + 15 + r + -3(r + 2) = 0

Reorder the terms:
5r + 15 + r + -3(2 + r) = 0
5r + 15 + r + (2 * -3 + r * -3) = 0
5r + 15 + r + (-6 + -3r) = 0

Reorder the terms:
15 + -6 + 5r + r + -3r = 0

Combine like terms: 15 + -6 = 9
9 + 5r + r + -3r = 0

Combine like terms: 5r + r = 6r
9 + 6r + -3r = 0

Combine like terms: 6r + -3r = 3r
9 + 3r = 0

Solving
9 + 3r = 0

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + 3r = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 3r = 0 + -9
3r = 0 + -9

Combine like terms: 0 + -9 = -9
3r = -9

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

Simplifying
r = -3

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