3p+15q+21r=

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Solution for 3p+15q+21r= equation:


Simplifying
3p + 15q + 21r = 0

Solving
3p + 15q + 21r = 0

Solving for variable 'p'.

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

Add '-15q' to each side of the equation.
3p + 15q + -15q + 21r = 0 + -15q

Combine like terms: 15q + -15q = 0
3p + 0 + 21r = 0 + -15q
3p + 21r = 0 + -15q
Remove the zero:
3p + 21r = -15q

Add '-21r' to each side of the equation.
3p + 21r + -21r = -15q + -21r

Combine like terms: 21r + -21r = 0
3p + 0 = -15q + -21r
3p = -15q + -21r

Divide each side by '3'.
p = -5q + -7r

Simplifying
p = -5q + -7r

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