4.2d-1.7-2.2d+4.3=-1.4

Solution for 4.2d-1.7-2.2d+4.3=-1.4 equation:

Simplifying
4.2d + -1.7 + -2.2d + 4.3 = -1.4

Reorder the terms:
-1.7 + 4.3 + 4.2d + -2.2d = -1.4

Combine like terms: -1.7 + 4.3 = 2.6
2.6 + 4.2d + -2.2d = -1.4

Combine like terms: 4.2d + -2.2d = 2d
2.6 + 2d = -1.4

Solving
2.6 + 2d = -1.4

Solving for variable 'd'.

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

Add '-2.6' to each side of the equation.
2.6 + -2.6 + 2d = -1.4 + -2.6

Combine like terms: 2.6 + -2.6 = 0.0
0.0 + 2d = -1.4 + -2.6
2d = -1.4 + -2.6

Combine like terms: -1.4 + -2.6 = -4
2d = -4

Divide each side by '2'.
d = -2

Simplifying
d = -2