1.4x^2+2r-1=0

Solution for 1.4x^2+2r-1=0 equation:

Simplifying
1.4x2 + 2r + -1 = 0

Reorder the terms:
-1 + 2r + 1.4x2 = 0

Solving
-1 + 2r + 1.4x2 = 0

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 2r + 1 + 1.4x2 = 0 + 1

Reorder the terms:
-1 + 1 + 2r + 1.4x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2r + 1.4x2 = 0 + 1
2r + 1.4x2 = 0 + 1

Combine like terms: 0 + 1 = 1
2r + 1.4x2 = 1

Add '-1.4x2' to each side of the equation.
2r + 1.4x2 + -1.4x2 = 1 + -1.4x2

Combine like terms: 1.4x2 + -1.4x2 = 0.0
2r + 0.0 = 1 + -1.4x2
2r = 1 + -1.4x2

Divide each side by '2'.
r = 0.5 + -0.7x2

Simplifying
r = 0.5 + -0.7x2