4(2r+9)=-25-7r

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Solution for 4(2r+9)=-25-7r equation:


Simplifying
4(2r + 9) = -25 + -7r

Reorder the terms:
4(9 + 2r) = -25 + -7r
(9 * 4 + 2r * 4) = -25 + -7r
(36 + 8r) = -25 + -7r

Solving
36 + 8r = -25 + -7r

Solving for variable 'r'.

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

Add '7r' to each side of the equation.
36 + 8r + 7r = -25 + -7r + 7r

Combine like terms: 8r + 7r = 15r
36 + 15r = -25 + -7r + 7r

Combine like terms: -7r + 7r = 0
36 + 15r = -25 + 0
36 + 15r = -25

Add '-36' to each side of the equation.
36 + -36 + 15r = -25 + -36

Combine like terms: 36 + -36 = 0
0 + 15r = -25 + -36
15r = -25 + -36

Combine like terms: -25 + -36 = -61
15r = -61

Divide each side by '15'.
r = -4.066666667

Simplifying
r = -4.066666667

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