2(p-r)=9(p+4)

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Solution for 2(p-r)=9(p+4) equation:


Simplifying
2(p + -1r) = 9(p + 4)
(p * 2 + -1r * 2) = 9(p + 4)
(2p + -2r) = 9(p + 4)

Reorder the terms:
2p + -2r = 9(4 + p)
2p + -2r = (4 * 9 + p * 9)
2p + -2r = (36 + 9p)

Solving
2p + -2r = 36 + 9p

Solving for variable 'p'.

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

Add '-9p' to each side of the equation.
2p + -9p + -2r = 36 + 9p + -9p

Combine like terms: 2p + -9p = -7p
-7p + -2r = 36 + 9p + -9p

Combine like terms: 9p + -9p = 0
-7p + -2r = 36 + 0
-7p + -2r = 36

Add '2r' to each side of the equation.
-7p + -2r + 2r = 36 + 2r

Combine like terms: -2r + 2r = 0
-7p + 0 = 36 + 2r
-7p = 36 + 2r

Divide each side by '-7'.
p = -5.142857143 + -0.2857142857r

Simplifying
p = -5.142857143 + -0.2857142857r

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