4(r-2)+2(2+1)=12

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Solution for 4(r-2)+2(2+1)=12 equation:


Simplifying
4(r + -2) + 2(2 + 1) = 12

Reorder the terms:
4(-2 + r) + 2(2 + 1) = 12
(-2 * 4 + r * 4) + 2(2 + 1) = 12
(-8 + 4r) + 2(2 + 1) = 12

Combine like terms: 2 + 1 = 3
-8 + 4r + 2(3) = 12

Multiply 2 * 3
-8 + 4r + 6 = 12

Reorder the terms:
-8 + 6 + 4r = 12

Combine like terms: -8 + 6 = -2
-2 + 4r = 12

Solving
-2 + 4r = 12

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + 4r = 12 + 2

Combine like terms: -2 + 2 = 0
0 + 4r = 12 + 2
4r = 12 + 2

Combine like terms: 12 + 2 = 14
4r = 14

Divide each side by '4'.
r = 3.5

Simplifying
r = 3.5

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