(9-7)20=x

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Solution for (9-7)20=x equation:


Simplifying
(9 + -7) * 20 = x

Combine like terms: 9 + -7 = 2
(2) * 20 = x

Multiply 2 * 20
40 = x

Solving
40 = 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.
40 + -1x = x + -1x

Combine like terms: x + -1x = 0
40 + -1x = 0

Add '-40' to each side of the equation.
40 + -40 + -1x = 0 + -40

Combine like terms: 40 + -40 = 0
0 + -1x = 0 + -40
-1x = 0 + -40

Combine like terms: 0 + -40 = -40
-1x = -40

Divide each side by '-1'.
x = 40

Simplifying
x = 40

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