3(30-s)=4(s+19)

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Solution for 3(30-s)=4(s+19) equation:


Simplifying
3(30 + -1s) = 4(s + 19)
(30 * 3 + -1s * 3) = 4(s + 19)
(90 + -3s) = 4(s + 19)

Reorder the terms:
90 + -3s = 4(19 + s)
90 + -3s = (19 * 4 + s * 4)
90 + -3s = (76 + 4s)

Solving
90 + -3s = 76 + 4s

Solving for variable 's'.

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

Add '-4s' to each side of the equation.
90 + -3s + -4s = 76 + 4s + -4s

Combine like terms: -3s + -4s = -7s
90 + -7s = 76 + 4s + -4s

Combine like terms: 4s + -4s = 0
90 + -7s = 76 + 0
90 + -7s = 76

Add '-90' to each side of the equation.
90 + -90 + -7s = 76 + -90

Combine like terms: 90 + -90 = 0
0 + -7s = 76 + -90
-7s = 76 + -90

Combine like terms: 76 + -90 = -14
-7s = -14

Divide each side by '-7'.
s = 2

Simplifying
s = 2

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