12-2*5=r

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Solution for 12-2*5=r equation:


Simplifying
12 + -2 * 5 = r

Multiply -2 * 5
12 + -10 = r

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

Solving
2 = r

Solving for variable 'r'.

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

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

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

Add '-2' to each side of the equation.
2 + -2 + -1r = 0 + -2

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

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

Divide each side by '-1'.
r = 2

Simplifying
r = 2

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