90=-100+20p-(350-10p)

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Solution for 90=-100+20p-(350-10p) equation: 


Simplifying
90 = -100 + 20p + -1(350 + -10p)
90 = -100 + 20p + (350 * -1 + -10p * -1)
90 = -100 + 20p + (-350 + 10p)

Reorder the terms:
90 = -100 + -350 + 20p + 10p

Combine like terms: -100 + -350 = -450
90 = -450 + 20p + 10p

Combine like terms: 20p + 10p = 30p
90 = -450 + 30p

Solving
90 = -450 + 30p

Solving for variable 'p'.

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

Add '-30p' to each side of the equation.
90 + -30p = -450 + 30p + -30p

Combine like terms: 30p + -30p = 0
90 + -30p = -450 + 0
90 + -30p = -450

Add '-90' to each side of the equation.
90 + -90 + -30p = -450 + -90

Combine like terms: 90 + -90 = 0
0 + -30p = -450 + -90
-30p = -450 + -90

Combine like terms: -450 + -90 = -540
-30p = -540

Divide each side by '-30'.
p = 18

Simplifying
p = 18

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