9r+5s-5(8r-4s)=

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Solution for 9r+5s-5(8r-4s)= equation:


Simplifying
9r + 5s + -5(8r + -4s) = 0
9r + 5s + (8r * -5 + -4s * -5) = 0
9r + 5s + (-40r + 20s) = 0

Reorder the terms:
9r + -40r + 5s + 20s = 0

Combine like terms: 9r + -40r = -31r
-31r + 5s + 20s = 0

Combine like terms: 5s + 20s = 25s
-31r + 25s = 0

Solving
-31r + 25s = 0

Solving for variable 'r'.

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

Add '-25s' to each side of the equation.
-31r + 25s + -25s = 0 + -25s

Combine like terms: 25s + -25s = 0
-31r + 0 = 0 + -25s
-31r = 0 + -25s
Remove the zero:
-31r = -25s

Divide each side by '-31'.
r = 0.8064516129s

Simplifying
r = 0.8064516129s

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