-0.3x+0.7x+9=-9

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Solution for -0.3x+0.7x+9=-9 equation:


Simplifying
-0.3x + 0.7x + 9 = -9

Reorder the terms:
9 + -0.3x + 0.7x = -9

Combine like terms: -0.3x + 0.7x = 0.4x
9 + 0.4x = -9

Solving
9 + 0.4x = -9

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 0.4x = -9 + -9

Combine like terms: 9 + -9 = 0
0 + 0.4x = -9 + -9
0.4x = -9 + -9

Combine like terms: -9 + -9 = -18
0.4x = -18

Divide each side by '0.4'.
x = -45

Simplifying
x = -45

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