Answer:
1/2
Step-by-step explanation:
-3/4 + (1/10 ÷ 2/5)
1/10 ÷ 2/5 = 1/10 x 5/2 (Keep. Change. Flip. [KCF])
1/10 x 5/2 = 5/20 (or simplify to 1/4)
1/4 - 3/4 = 0.25 - 0.75 = -0.5 (or 1/2)
