=(3s-15t)-(-28s+7t)

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Solution for =(3s-15t)-(-28s+7t) equation:


Simplifying
0 = (3s + -15t) + -1(-28s + 7t)

Remove parenthesis around (3s + -15t)
0 = 3s + -15t + -1(-28s + 7t)
0 = 3s + -15t + (-28s * -1 + 7t * -1)
0 = 3s + -15t + (28s + -7t)

Reorder the terms:
0 = 3s + 28s + -15t + -7t

Combine like terms: 3s + 28s = 31s
0 = 31s + -15t + -7t

Combine like terms: -15t + -7t = -22t
0 = 31s + -22t

Solving
0 = 31s + -22t

Solving for variable 's'.

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

Add '-31s' to each side of the equation.
0 + -31s = 31s + -31s + -22t
Remove the zero:
-31s = 31s + -31s + -22t

Combine like terms: 31s + -31s = 0
-31s = 0 + -22t
-31s = -22t

Divide each side by '-31'.
s = 0.7096774194t

Simplifying
s = 0.7096774194t

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