To simplify the given expression, we can distribute the coefficients and distribute within the parentheses:
0.2(2.1x - 2.3y) - 0.4(3.1y + 1.9x)= 0.42x - 0.46y - 1.24y - 0.76x= 0.42x - 0.76x - 0.46y - 1.24y= (0.42 - 0.76)x + (-0.46 - 1.24)y= -0.34x - 1.7y
Therefore, the simplified expression is -0.34x - 1.7y.
To simplify the given expression, we can distribute the coefficients and distribute within the parentheses:
0.2(2.1x - 2.3y) - 0.4(3.1y + 1.9x)
= 0.42x - 0.46y - 1.24y - 0.76x
= 0.42x - 0.76x - 0.46y - 1.24y
= (0.42 - 0.76)x + (-0.46 - 1.24)y
= -0.34x - 1.7y
Therefore, the simplified expression is -0.34x - 1.7y.