2.8(3r+9)-1.5r=

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Solution for 2.8(3r+9)-1.5r= equation:


Simplifying
2.8(3r + 9) + -1.5r = 0

Reorder the terms:
2.8(9 + 3r) + -1.5r = 0
(9 * 2.8 + 3r * 2.8) + -1.5r = 0
(25.2 + 8.4r) + -1.5r = 0

Combine like terms: 8.4r + -1.5r = 6.9r
25.2 + 6.9r = 0

Solving
25.2 + 6.9r = 0

Solving for variable 'r'.

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

Add '-25.2' to each side of the equation.
25.2 + -25.2 + 6.9r = 0 + -25.2

Combine like terms: 25.2 + -25.2 = 0.0
0.0 + 6.9r = 0 + -25.2
6.9r = 0 + -25.2

Combine like terms: 0 + -25.2 = -25.2
6.9r = -25.2

Divide each side by '6.9'.
r = -3.652173913

Simplifying
r = -3.652173913

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