-100=-3p-7(t-3p)

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Solution for -100=-3p-7(t-3p) equation:


Simplifying
-100 = -3p + -7(t + -3p)

Reorder the terms:
-100 = -3p + -7(-3p + t)
-100 = -3p + (-3p * -7 + t * -7)
-100 = -3p + (21p + -7t)

Combine like terms: -3p + 21p = 18p
-100 = 18p + -7t

Solving
-100 = 18p + -7t

Solving for variable 'p'.

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

Add '-18p' to each side of the equation.
-100 + -18p = 18p + -18p + -7t

Combine like terms: 18p + -18p = 0
-100 + -18p = 0 + -7t
-100 + -18p = -7t

Add '100' to each side of the equation.
-100 + 100 + -18p = 100 + -7t

Combine like terms: -100 + 100 = 0
0 + -18p = 100 + -7t
-18p = 100 + -7t

Divide each side by '-18'.
p = -5.555555556 + 0.3888888889t

Simplifying
p = -5.555555556 + 0.3888888889t

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