21=35-7x

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Solution for 21=35-7x equation:


Simplifying
21 = 35 + -7x

Solving
21 = 35 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
21 + 7x = 35 + -7x + 7x

Combine like terms: -7x + 7x = 0
21 + 7x = 35 + 0
21 + 7x = 35

Add '-21' to each side of the equation.
21 + -21 + 7x = 35 + -21

Combine like terms: 21 + -21 = 0
0 + 7x = 35 + -21
7x = 35 + -21

Combine like terms: 35 + -21 = 14
7x = 14

Divide each side by '7'.
x = 2

Simplifying
x = 2

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