3(r-3)-r=-4(2r+5)-8

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Solution for 3(r-3)-r=-4(2r+5)-8 equation:


Simplifying
3(r + -3) + -1r = -4(2r + 5) + -8

Reorder the terms:
3(-3 + r) + -1r = -4(2r + 5) + -8
(-3 * 3 + r * 3) + -1r = -4(2r + 5) + -8
(-9 + 3r) + -1r = -4(2r + 5) + -8

Combine like terms: 3r + -1r = 2r
-9 + 2r = -4(2r + 5) + -8

Reorder the terms:
-9 + 2r = -4(5 + 2r) + -8
-9 + 2r = (5 * -4 + 2r * -4) + -8
-9 + 2r = (-20 + -8r) + -8

Reorder the terms:
-9 + 2r = -20 + -8 + -8r

Combine like terms: -20 + -8 = -28
-9 + 2r = -28 + -8r

Solving
-9 + 2r = -28 + -8r

Solving for variable 'r'.

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

Add '8r' to each side of the equation.
-9 + 2r + 8r = -28 + -8r + 8r

Combine like terms: 2r + 8r = 10r
-9 + 10r = -28 + -8r + 8r

Combine like terms: -8r + 8r = 0
-9 + 10r = -28 + 0
-9 + 10r = -28

Add '9' to each side of the equation.
-9 + 9 + 10r = -28 + 9

Combine like terms: -9 + 9 = 0
0 + 10r = -28 + 9
10r = -28 + 9

Combine like terms: -28 + 9 = -19
10r = -19

Divide each side by '10'.
r = -1.9

Simplifying
r = -1.9

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