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

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


Simplifying
-7r + -2(4r + 9) = 0

Reorder the terms:
-7r + -2(9 + 4r) = 0
-7r + (9 * -2 + 4r * -2) = 0
-7r + (-18 + -8r) = 0

Reorder the terms:
-18 + -7r + -8r = 0

Combine like terms: -7r + -8r = -15r
-18 + -15r = 0

Solving
-18 + -15r = 0

Solving for variable 'r'.

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

Add '18' to each side of the equation.
-18 + 18 + -15r = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -15r = 0 + 18
-15r = 0 + 18

Combine like terms: 0 + 18 = 18
-15r = 18

Divide each side by '-15'.
r = -1.2

Simplifying
r = -1.2

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