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

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


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

Reorder the terms:
-4(7 + 8r) + 9(3r + 4) = 0
(7 * -4 + 8r * -4) + 9(3r + 4) = 0
(-28 + -32r) + 9(3r + 4) = 0

Reorder the terms:
-28 + -32r + 9(4 + 3r) = 0
-28 + -32r + (4 * 9 + 3r * 9) = 0
-28 + -32r + (36 + 27r) = 0

Reorder the terms:
-28 + 36 + -32r + 27r = 0

Combine like terms: -28 + 36 = 8
8 + -32r + 27r = 0

Combine like terms: -32r + 27r = -5r
8 + -5r = 0

Solving
8 + -5r = 0

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + -5r = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -5r = 0 + -8
-5r = 0 + -8

Combine like terms: 0 + -8 = -8
-5r = -8

Divide each side by '-5'.
r = 1.6

Simplifying
r = 1.6

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