(7)7+x=40

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Solution for (7)7+x=40 equation: 


Simplifying
(7) * 7 + x = 40

Multiply 7 * 7
49 + x = 40

Solving
49 + x = 40

Solving for variable 'x'.

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

Add '-49' to each side of the equation.
49 + -49 + x = 40 + -49

Combine like terms: 49 + -49 = 0
0 + x = 40 + -49
x = 40 + -49

Combine like terms: 40 + -49 = -9
x = -9

Simplifying
x = -9

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