18+7x=21-3x

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Solution for 18+7x=21-3x equation:


Simplifying
18 + 7x = 21 + -3x

Solving
18 + 7x = 21 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
18 + 7x + 3x = 21 + -3x + 3x

Combine like terms: 7x + 3x = 10x
18 + 10x = 21 + -3x + 3x

Combine like terms: -3x + 3x = 0
18 + 10x = 21 + 0
18 + 10x = 21

Add '-18' to each side of the equation.
18 + -18 + 10x = 21 + -18

Combine like terms: 18 + -18 = 0
0 + 10x = 21 + -18
10x = 21 + -18

Combine like terms: 21 + -18 = 3
10x = 3

Divide each side by '10'.
x = 0.3

Simplifying
x = 0.3

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