3r^2+5r-2=3r^2+4r-12

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Solution for 3r^2+5r-2=3r^2+4r-12 equation:


Simplifying
3r2 + 5r + -2 = 3r2 + 4r + -12

Reorder the terms:
-2 + 5r + 3r2 = 3r2 + 4r + -12

Reorder the terms:
-2 + 5r + 3r2 = -12 + 4r + 3r2

Add '-3r2' to each side of the equation.
-2 + 5r + 3r2 + -3r2 = -12 + 4r + 3r2 + -3r2

Combine like terms: 3r2 + -3r2 = 0
-2 + 5r + 0 = -12 + 4r + 3r2 + -3r2
-2 + 5r = -12 + 4r + 3r2 + -3r2

Combine like terms: 3r2 + -3r2 = 0
-2 + 5r = -12 + 4r + 0
-2 + 5r = -12 + 4r

Solving
-2 + 5r = -12 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
-2 + 5r + -4r = -12 + 4r + -4r

Combine like terms: 5r + -4r = 1r
-2 + 1r = -12 + 4r + -4r

Combine like terms: 4r + -4r = 0
-2 + 1r = -12 + 0
-2 + 1r = -12

Add '2' to each side of the equation.
-2 + 2 + 1r = -12 + 2

Combine like terms: -2 + 2 = 0
0 + 1r = -12 + 2
1r = -12 + 2

Combine like terms: -12 + 2 = -10
1r = -10

Divide each side by '1'.
r = -10

Simplifying
r = -10

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