3s-4(20-s)=18

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Solution for 3s-4(20-s)=18 equation:


Simplifying
3s + -4(20 + -1s) = 18
3s + (20 * -4 + -1s * -4) = 18
3s + (-80 + 4s) = 18

Reorder the terms:
-80 + 3s + 4s = 18

Combine like terms: 3s + 4s = 7s
-80 + 7s = 18

Solving
-80 + 7s = 18

Solving for variable 's'.

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

Add '80' to each side of the equation.
-80 + 80 + 7s = 18 + 80

Combine like terms: -80 + 80 = 0
0 + 7s = 18 + 80
7s = 18 + 80

Combine like terms: 18 + 80 = 98
7s = 98

Divide each side by '7'.
s = 14

Simplifying
s = 14

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