8r+9s-4r-7s=

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Solution for 8r+9s-4r-7s= equation:


Simplifying
8r + 9s + -4r + -7s = 0

Reorder the terms:
8r + -4r + 9s + -7s = 0

Combine like terms: 8r + -4r = 4r
4r + 9s + -7s = 0

Combine like terms: 9s + -7s = 2s
4r + 2s = 0

Solving
4r + 2s = 0

Solving for variable 'r'.

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

Add '-2s' to each side of the equation.
4r + 2s + -2s = 0 + -2s

Combine like terms: 2s + -2s = 0
4r + 0 = 0 + -2s
4r = 0 + -2s
Remove the zero:
4r = -2s

Divide each side by '4'.
r = -0.5s

Simplifying
r = -0.5s

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