9r+(2r-28)=7r

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Solution for 9r+(2r-28)=7r equation:


Simplifying
9r + (2r + -28) = 7r

Reorder the terms:
9r + (-28 + 2r) = 7r

Remove parenthesis around (-28 + 2r)
9r + -28 + 2r = 7r

Reorder the terms:
-28 + 9r + 2r = 7r

Combine like terms: 9r + 2r = 11r
-28 + 11r = 7r

Solving
-28 + 11r = 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-28 + 11r + -7r = 7r + -7r

Combine like terms: 11r + -7r = 4r
-28 + 4r = 7r + -7r

Combine like terms: 7r + -7r = 0
-28 + 4r = 0

Add '28' to each side of the equation.
-28 + 28 + 4r = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 4r = 0 + 28
4r = 0 + 28

Combine like terms: 0 + 28 = 28
4r = 28

Divide each side by '4'.
r = 7

Simplifying
r = 7

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