Answer:
-0.7
Step-by-step explanation:
-0.75-(-[tex]\frac{2}{5}[/tex])+0.4+(-[tex]\frac{3}{4}[/tex]) = -0.75-(-0.4)+0.4+(-0.75)
[I would prefer to change the fractions to decimals first for easier calculation]
-0.75-(-0.4)+0.4+(-0.75) = -0.75+0.4+0.4-0.75
[2 - makes one +. One + and one - makes one -. (Rule for breaking brackets)]
-0.75+0.4+0.4-0.75 = -1.5+0.8
[Simplify.]
-1.5+0.8 = -0.7
