3(5r+7)-28=

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Solution for 3(5r+7)-28= equation:


Simplifying
3(5r + 7) + -28 = 0

Reorder the terms:
3(7 + 5r) + -28 = 0
(7 * 3 + 5r * 3) + -28 = 0
(21 + 15r) + -28 = 0

Reorder the terms:
21 + -28 + 15r = 0

Combine like terms: 21 + -28 = -7
-7 + 15r = 0

Solving
-7 + 15r = 0

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + 15r = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 15r = 0 + 7
15r = 0 + 7

Combine like terms: 0 + 7 = 7
15r = 7

Divide each side by '15'.
r = 0.4666666667

Simplifying
r = 0.4666666667

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