3(10r+9)=3(7r+9)

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Solution for 3(10r+9)=3(7r+9) equation:


Simplifying
3(10r + 9) = 3(7r + 9)

Reorder the terms:
3(9 + 10r) = 3(7r + 9)
(9 * 3 + 10r * 3) = 3(7r + 9)
(27 + 30r) = 3(7r + 9)

Reorder the terms:
27 + 30r = 3(9 + 7r)
27 + 30r = (9 * 3 + 7r * 3)
27 + 30r = (27 + 21r)

Add '-27' to each side of the equation.
27 + -27 + 30r = 27 + -27 + 21r

Combine like terms: 27 + -27 = 0
0 + 30r = 27 + -27 + 21r
30r = 27 + -27 + 21r

Combine like terms: 27 + -27 = 0
30r = 0 + 21r
30r = 21r

Solving
30r = 21r

Solving for variable 'r'.

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

Add '-21r' to each side of the equation.
30r + -21r = 21r + -21r

Combine like terms: 30r + -21r = 9r
9r = 21r + -21r

Combine like terms: 21r + -21r = 0
9r = 0

Divide each side by '9'.
r = 0

Simplifying
r = 0

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