4r+5s=42

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Solution for 4r+5s=42 equation: 


Simplifying
4r + 5s = 42

Solving
4r + 5s = 42

Solving for variable 'r'.

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

Add '-5s' to each side of the equation.
4r + 5s + -5s = 42 + -5s

Combine like terms: 5s + -5s = 0
4r + 0 = 42 + -5s
4r = 42 + -5s

Divide each side by '4'.
r = 10.5 + -1.25s

Simplifying
r = 10.5 + -1.25s

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