-4(8r-2)+3(10r+5)=

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Solution for -4(8r-2)+3(10r+5)= equation:


Simplifying
-4(8r + -2) + 3(10r + 5) = 0

Reorder the terms:
-4(-2 + 8r) + 3(10r + 5) = 0
(-2 * -4 + 8r * -4) + 3(10r + 5) = 0
(8 + -32r) + 3(10r + 5) = 0

Reorder the terms:
8 + -32r + 3(5 + 10r) = 0
8 + -32r + (5 * 3 + 10r * 3) = 0
8 + -32r + (15 + 30r) = 0

Reorder the terms:
8 + 15 + -32r + 30r = 0

Combine like terms: 8 + 15 = 23
23 + -32r + 30r = 0

Combine like terms: -32r + 30r = -2r
23 + -2r = 0

Solving
23 + -2r = 0

Solving for variable 'r'.

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

Add '-23' to each side of the equation.
23 + -23 + -2r = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -2r = 0 + -23
-2r = 0 + -23

Combine like terms: 0 + -23 = -23
-2r = -23

Divide each side by '-2'.
r = 11.5

Simplifying
r = 11.5

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