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
