0.25=x+.4-.7

Solution for 0.25=x+.4-.7 equation:

Simplifying
0.25 = x + 0.4 + -0.7

Reorder the terms:
0.25 = 0.4 + -0.7 + x

Combine like terms: 0.4 + -0.7 = -0.3
0.25 = -0.3 + x

Solving
0.25 = -0.3 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
0.25 + -1x = -0.3 + x + -1x

Combine like terms: x + -1x = 0
0.25 + -1x = -0.3 + 0
0.25 + -1x = -0.3

Add '-0.25' to each side of the equation.
0.25 + -0.25 + -1x = -0.3 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -1x = -0.3 + -0.25
-1x = -0.3 + -0.25

Combine like terms: -0.3 + -0.25 = -0.55
-1x = -0.55

Divide each side by '-1'.
x = 0.55

Simplifying
x = 0.55