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

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


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

Reorder the terms:
-3 + 8r + 2r = 4(2r + 5)

Combine like terms: 8r + 2r = 10r
-3 + 10r = 4(2r + 5)

Reorder the terms:
-3 + 10r = 4(5 + 2r)
-3 + 10r = (5 * 4 + 2r * 4)
-3 + 10r = (20 + 8r)

Solving
-3 + 10r = 20 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
-3 + 10r + -8r = 20 + 8r + -8r

Combine like terms: 10r + -8r = 2r
-3 + 2r = 20 + 8r + -8r

Combine like terms: 8r + -8r = 0
-3 + 2r = 20 + 0
-3 + 2r = 20

Add '3' to each side of the equation.
-3 + 3 + 2r = 20 + 3

Combine like terms: -3 + 3 = 0
0 + 2r = 20 + 3
2r = 20 + 3

Combine like terms: 20 + 3 = 23
2r = 23

Divide each side by '2'.
r = 11.5

Simplifying
r = 11.5

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