126=140-.7x

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Solution for 126=140-.7x equation:


Simplifying
126 = 140 + -0.7x

Solving
126 = 140 + -0.7x

Solving for variable 'x'.

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

Add '0.7x' to each side of the equation.
126 + 0.7x = 140 + -0.7x + 0.7x

Combine like terms: -0.7x + 0.7x = 0.0
126 + 0.7x = 140 + 0.0
126 + 0.7x = 140

Add '-126' to each side of the equation.
126 + -126 + 0.7x = 140 + -126

Combine like terms: 126 + -126 = 0
0 + 0.7x = 140 + -126
0.7x = 140 + -126

Combine like terms: 140 + -126 = 14
0.7x = 14

Divide each side by '0.7'.
x = 20

Simplifying
x = 20

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