2(4r+6)=.75(12r+18)

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Solution for 2(4r+6)=.75(12r+18) equation:


Simplifying
2(4r + 6) = 0.75(12r + 18)

Reorder the terms:
2(6 + 4r) = 0.75(12r + 18)
(6 * 2 + 4r * 2) = 0.75(12r + 18)
(12 + 8r) = 0.75(12r + 18)

Reorder the terms:
12 + 8r = 0.75(18 + 12r)
12 + 8r = (18 * 0.75 + 12r * 0.75)
12 + 8r = (13.5 + 9r)

Solving
12 + 8r = 13.5 + 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.
12 + 8r + -9r = 13.5 + 9r + -9r

Combine like terms: 8r + -9r = -1r
12 + -1r = 13.5 + 9r + -9r

Combine like terms: 9r + -9r = 0
12 + -1r = 13.5 + 0
12 + -1r = 13.5

Add '-12' to each side of the equation.
12 + -12 + -1r = 13.5 + -12

Combine like terms: 12 + -12 = 0
0 + -1r = 13.5 + -12
-1r = 13.5 + -12

Combine like terms: 13.5 + -12 = 1.5
-1r = 1.5

Divide each side by '-1'.
r = -1.5

Simplifying
r = -1.5

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