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Найдите значение выражения : (a + b) + c , если : 1) a = 3,8; b = -5,5; c = -4,5; 2) a = 25,6; b = 18,2; c = 14,4; 3) a = 1/6; b = 2/3; c = -5/8; 4) a = 2 3/8; b = 5 1/4; c = -3 5/12.
Найдите значение выражения : (a + b) + c , если : 1) a = 3,8; b = -5,5; c = -4,5; 2) a = 25,6; b = 18,2; c = 14,4; 3) a = 1/6; b = 2/3; c = -5/8; 4) a = 2 3/8; b = 5 1/4; c = -3 5/12.
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1) 3,8-5,5-4,5=3,8-10=-6,2;
2) 25,6+18,2+14,4=40+18,2=58,2;
3) 1/6+2/3-5/8=4/24+16/24-15/24=5/24;
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