True: ▲ + 3 = 30 : ▲ = 27, ○ – 5 = 12 : ○ = 17, □ + 14 = 20 : □ = 6, ◊ – 7 = 9 : ◊ = 16, ★ + 11 = 25 : ★ = 14, △ – 6 = 18 : △ = 24, ● + 9 = 40 : ● = 31, ■ – 8 = 22 : ■ = 30, ▲ + 10 = 50 : ▲ = 40, ○ – 12 = 28 : ○ = 40, □ + 4 = 19 : □ = 15, ◊ – 15 = 10 : ◊ = 25, ★ + 7 = 30 : ★ = 23, △ – 9 = 15 : △ = 24, ● + 20 = 100 : ● = 80, ■ – 18 = 12 : ■ = 30, ▲ + 5 = 45 : ▲ = 40, ○ – 25 = 50 : ○ = 75, □ + 30 = 90 : □ = 60, ◊ – 40 = 20 : ◊ = 60, False: ▲ + 3 = 30 : ▲ = 25, ○ – 5 = 12 : ○ = 20, □ + 14 = 20 : □ = 8, ◊ – 7 = 9 : ◊ = 20, ★ + 11 = 25 : ★ = 20, ● + 9 = 40 : ● = 25, ■ – 8 = 22 : ■ = 28, ▲ + 10 = 50 : ▲ = 30, ○ – 12 = 28 : ○ = 30, □ + 4 = 19 : □ = 10, ◊ – 15 = 10 : ◊ = 20, ★ + 7 = 30 : ★ = 25, △ – 9 = 15 : △ = 20, ● + 20 = 100 : ● = 70, ■ – 18 = 12 : ■ = 28, ▲ + 5 = 45 : ▲ = 35, ○ – 25 = 50 : ○ = 65, □ + 30 = 90 : □ = 70, ◊ – 40 = 20 : ◊ = 50, △ – 6 = 18 : △ = 20,

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