Помогите с 522, срочно!!!

1) 1/2 — 0.7 = 0.5 — 0.7 = — 0.2
2) 0.75 — (-1/5) = 0.75 + 0.2 = 0.95
3) -9.5 — 3 7/20 = -9.5 — 3 35/100 = -9.5 — 3.35 = -12.85
4) 6.7 — (-4 8/25) = 6.7 + 4 32/100 = 6.7 + 4.32 = 11.02
5) — 10.3 — (-2 3/5) = -10.3 + 2.6= -7.7
6) 18.7 — (20 1/4) = 18.7 — 20.25 = -1.55

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