1.3*x+1.3*1.3*x-40=0

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Solution for 1.3*x+1.3*1.3*x-40=0 equation: 


Simplifying
1.3x + 1.3 * 1.3x + -40 = 0

Multiply 1.3 * 1.3
1.3x + 1.69x + -40 = 0

Reorder the terms:
-40 + 1.3x + 1.69x = 0

Combine like terms: 1.3x + 1.69x = 2.99x
-40 + 2.99x = 0

Solving
-40 + 2.99x = 0

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 2.99x = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 2.99x = 0 + 40
2.99x = 0 + 40

Combine like terms: 0 + 40 = 40
2.99x = 40

Divide each side by '2.99'.
x = 13.37792642

Simplifying
x = 13.37792642

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