7r+5s-5(5r-7s)=

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Solution for 7r+5s-5(5r-7s)= equation:


Simplifying
7r + 5s + -5(5r + -7s) = 0
7r + 5s + (5r * -5 + -7s * -5) = 0
7r + 5s + (-25r + 35s) = 0

Reorder the terms:
7r + -25r + 5s + 35s = 0

Combine like terms: 7r + -25r = -18r
-18r + 5s + 35s = 0

Combine like terms: 5s + 35s = 40s
-18r + 40s = 0

Solving
-18r + 40s = 0

Solving for variable 'r'.

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

Add '-40s' to each side of the equation.
-18r + 40s + -40s = 0 + -40s

Combine like terms: 40s + -40s = 0
-18r + 0 = 0 + -40s
-18r = 0 + -40s
Remove the zero:
-18r = -40s

Divide each side by '-18'.
r = 2.222222222s

Simplifying
r = 2.222222222s

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