How to solve the problem 3.2d-4d=2.3d+3

3.2d - 4d = 2.3d + 3 ... simplify by combining like terms

-0.8d = 2.3d + 3 ... subtract 2.3d from both sides

-0.8d - 2.3d = 3 ... simplify again

-3.1d = 3 ... divide both sides by - 3.1

d = 3 / - 3.1

d = - 0.97

or

3.2d - 4d = 2.3d + 3 ... multiply the equation by 10, gets rid of the decimals

32d - 40d = 23d + 30 ... subtract 23d from both sides

32d - 40d - 23d = 30 ... simplify

-31d = 30 ... divide by - 31

d = - 30/31

d = - 0.97