.7x+1.2x-.4x=15

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Solution for .7x+1.2x-.4x=15 equation: 


Simplifying
0.7x + 1.2x + -0.4x = 15

Combine like terms: 0.7x + 1.2x = 1.9x
1.9x + -0.4x = 15

Combine like terms: 1.9x + -0.4x = 1.5x
1.5x = 15

Solving
1.5x = 15

Solving for variable 'x'.

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

Divide each side by '1.5'.
x = 10

Simplifying
x = 10

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