10(r-3)=4(2r+9)

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Solution for 10(r-3)=4(2r+9) equation:


Simplifying
10(r + -3) = 4(2r + 9)

Reorder the terms:
10(-3 + r) = 4(2r + 9)
(-3 * 10 + r * 10) = 4(2r + 9)
(-30 + 10r) = 4(2r + 9)

Reorder the terms:
-30 + 10r = 4(9 + 2r)
-30 + 10r = (9 * 4 + 2r * 4)
-30 + 10r = (36 + 8r)

Solving
-30 + 10r = 36 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
-30 + 10r + -8r = 36 + 8r + -8r

Combine like terms: 10r + -8r = 2r
-30 + 2r = 36 + 8r + -8r

Combine like terms: 8r + -8r = 0
-30 + 2r = 36 + 0
-30 + 2r = 36

Add '30' to each side of the equation.
-30 + 30 + 2r = 36 + 30

Combine like terms: -30 + 30 = 0
0 + 2r = 36 + 30
2r = 36 + 30

Combine like terms: 36 + 30 = 66
2r = 66

Divide each side by '2'.
r = 33

Simplifying
r = 33

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