-9(4r+7)+8(3r+4)=

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Solution for -9(4r+7)+8(3r+4)= equation:


Simplifying
-9(4r + 7) + 8(3r + 4) = 0

Reorder the terms:
-9(7 + 4r) + 8(3r + 4) = 0
(7 * -9 + 4r * -9) + 8(3r + 4) = 0
(-63 + -36r) + 8(3r + 4) = 0

Reorder the terms:
-63 + -36r + 8(4 + 3r) = 0
-63 + -36r + (4 * 8 + 3r * 8) = 0
-63 + -36r + (32 + 24r) = 0

Reorder the terms:
-63 + 32 + -36r + 24r = 0

Combine like terms: -63 + 32 = -31
-31 + -36r + 24r = 0

Combine like terms: -36r + 24r = -12r
-31 + -12r = 0

Solving
-31 + -12r = 0

Solving for variable 'r'.

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

Add '31' to each side of the equation.
-31 + 31 + -12r = 0 + 31

Combine like terms: -31 + 31 = 0
0 + -12r = 0 + 31
-12r = 0 + 31

Combine like terms: 0 + 31 = 31
-12r = 31

Divide each side by '-12'.
r = -2.583333333

Simplifying
r = -2.583333333

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