1.3+0.4x=0.9x-7.7

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Solution for 1.3+0.4x=0.9x-7.7 equation: 


Simplifying
1.3 + 0.4x = 0.9x + -7.7

Reorder the terms:
1.3 + 0.4x = -7.7 + 0.9x

Solving
1.3 + 0.4x = -7.7 + 0.9x

Solving for variable 'x'.

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

Add '-0.9x' to each side of the equation.
1.3 + 0.4x + -0.9x = -7.7 + 0.9x + -0.9x

Combine like terms: 0.4x + -0.9x = -0.5x
1.3 + -0.5x = -7.7 + 0.9x + -0.9x

Combine like terms: 0.9x + -0.9x = 0.0
1.3 + -0.5x = -7.7 + 0.0
1.3 + -0.5x = -7.7

Add '-1.3' to each side of the equation.
1.3 + -1.3 + -0.5x = -7.7 + -1.3

Combine like terms: 1.3 + -1.3 = 0.0
0.0 + -0.5x = -7.7 + -1.3
-0.5x = -7.7 + -1.3

Combine like terms: -7.7 + -1.3 = -9
-0.5x = -9

Divide each side by '-0.5'.
x = 18

Simplifying
x = 18

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