2(r-7)-2(r-3)=9(r-2)

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Solution for 2(r-7)-2(r-3)=9(r-2) equation:


Simplifying
2(r + -7) + -2(r + -3) = 9(r + -2)

Reorder the terms:
2(-7 + r) + -2(r + -3) = 9(r + -2)
(-7 * 2 + r * 2) + -2(r + -3) = 9(r + -2)
(-14 + 2r) + -2(r + -3) = 9(r + -2)

Reorder the terms:
-14 + 2r + -2(-3 + r) = 9(r + -2)
-14 + 2r + (-3 * -2 + r * -2) = 9(r + -2)
-14 + 2r + (6 + -2r) = 9(r + -2)

Reorder the terms:
-14 + 6 + 2r + -2r = 9(r + -2)

Combine like terms: -14 + 6 = -8
-8 + 2r + -2r = 9(r + -2)

Combine like terms: 2r + -2r = 0
-8 + 0 = 9(r + -2)
-8 = 9(r + -2)

Reorder the terms:
-8 = 9(-2 + r)
-8 = (-2 * 9 + r * 9)
-8 = (-18 + 9r)

Solving
-8 = -18 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
-8 + -9r = -18 + 9r + -9r

Combine like terms: 9r + -9r = 0
-8 + -9r = -18 + 0
-8 + -9r = -18

Add '8' to each side of the equation.
-8 + 8 + -9r = -18 + 8

Combine like terms: -8 + 8 = 0
0 + -9r = -18 + 8
-9r = -18 + 8

Combine like terms: -18 + 8 = -10
-9r = -10

Divide each side by '-9'.
r = 1.111111111

Simplifying
r = 1.111111111

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