-5(2r-0.3)+.5(4r+3)=64

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Solution for -5(2r-0.3)+.5(4r+3)=64 equation:


Simplifying
-5(2r + -0.3) + 0.5(4r + 3) = 64

Reorder the terms:
-5(-0.3 + 2r) + 0.5(4r + 3) = 64
(-0.3 * -5 + 2r * -5) + 0.5(4r + 3) = 64
(1.5 + -10r) + 0.5(4r + 3) = 64

Reorder the terms:
1.5 + -10r + 0.5(3 + 4r) = 64
1.5 + -10r + (3 * 0.5 + 4r * 0.5) = 64
1.5 + -10r + (1.5 + 2r) = 64

Reorder the terms:
1.5 + 1.5 + -10r + 2r = 64

Combine like terms: 1.5 + 1.5 = 3
3 + -10r + 2r = 64

Combine like terms: -10r + 2r = -8r
3 + -8r = 64

Solving
3 + -8r = 64

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + -8r = 64 + -3

Combine like terms: 3 + -3 = 0
0 + -8r = 64 + -3
-8r = 64 + -3

Combine like terms: 64 + -3 = 61
-8r = 61

Divide each side by '-8'.
r = -7.625

Simplifying
r = -7.625

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