30=7+x

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Solution for 30=7+x equation:


Simplifying
30 = 7 + x

Solving
30 = 7 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
30 + -1x = 7 + x + -1x

Combine like terms: x + -1x = 0
30 + -1x = 7 + 0
30 + -1x = 7

Add '-30' to each side of the equation.
30 + -30 + -1x = 7 + -30

Combine like terms: 30 + -30 = 0
0 + -1x = 7 + -30
-1x = 7 + -30

Combine like terms: 7 + -30 = -23
-1x = -23

Divide each side by '-1'.
x = 23

Simplifying
x = 23

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