3(0)-21=2x

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Solution for 3(0)-21=2x equation:


Simplifying
3(0) + -21 = 2x

Multiply 3 * 0
0 + -21 = 2x

Anything times zero is zero.
0 + -21 = 2x

Combine like terms: 0 + -21 = -21
-21 = 2x

Solving
-21 = 2x

Solving for variable 'x'.

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

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

Combine like terms: 2x + -2x = 0
-21 + -2x = 0

Add '21' to each side of the equation.
-21 + 21 + -2x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -2x = 0 + 21
-2x = 0 + 21

Combine like terms: 0 + 21 = 21
-2x = 21

Divide each side by '-2'.
x = -10.5

Simplifying
x = -10.5

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