10x+21=15-2r

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Solution for 10x+21=15-2r equation:


Simplifying
10x + 21 = 15 + -2r

Reorder the terms:
21 + 10x = 15 + -2r

Solving
21 + 10x = 15 + -2r

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 10x = 15 + -21 + -2r

Combine like terms: 21 + -21 = 0
0 + 10x = 15 + -21 + -2r
10x = 15 + -21 + -2r

Combine like terms: 15 + -21 = -6
10x = -6 + -2r

Divide each side by '10'.
x = -0.6 + -0.2r

Simplifying
x = -0.6 + -0.2r

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