Oblicz wartość podanego wyrażenia. Wynik przedstaw w najprostszej postaci. (14 + 38)*3 215 *7 - 13 (23-512)*7 56*7 - 38 *3 (4*38 + 116)*2 2*(35-17)+ 15 1 16 *7 - 59 *3 ( 1 16*5-13)*5

(1/4 +3/8) · 3 = (2/8 +3/8) · 3 = 5/8 · 3 = 15/8 = 1 i 7/8 2/15 · 7 - 1/3 = 14/15 - 1/3 = 14/15 - 5/15 = 9/15 = 3/5 (2/3 - 5/12) · 7 = (8/12 - 5/12) · 7 = 3/12 · 7 = 1/4 · 7 = 7/4 = 1 i 3/4 5/6 · 7 - 3/8 · 3 = 35/6 - 9/8 = 140/24 - 27/24 = 113/24 = 4 i 17/24 (4 · 3/8 +1/16) · 2 = (3/2 +1/16) · 2 = (24/16 +1/16) · 2 = 25/16 · 2 = 25/8 = = 3 i 1/8 2 ·(3/5 - 1/7) +1/5 = 2 ·(21/35 - 5/35) +1/5 = 2 · 16/35 +1/5 = 32/35 +1/5 = = 32/35 +7/35 = 39/35 = 1 i 4/35 1 i 1/6 · 7 - 5/9 · 3 = 7/6 · 7 - 5/3 = 49/6 - 5/3 = 49/6 - 10/6 = 39/6 = = 6 i 3/6 = 6 i 1/2 (1 i 1/6 · 5 - 1/3) · 5 = (7/6 · 5 - 1/3) · 5 = (35/6 - 1/3) · 5 = (35/6 - 2/6) · 5 = = 33/6 · 5 = 11/2 · 5 = 55/2 = 27 i 1/2