Пошаговое объяснение:
№1
1)
2,4 + (-5,36) - (-0,84) + (-3,24) =
2,4 - 5,36 + 0,84 - 3,24 = -5,36
2)
-16,54 + (-9,31) - 11,27 - (-23,38) =
-16,54 - 9,31 - 11,27 + 23,38 = -13,74
3)
5 3/7 + (-2 1/4) - (-3 3/28) =
5 3/7 - 2 1/4 + 3 3/28 =
5 12/28 - 2 7/28 + 3 3/28 = 6 8/28 = 6 2/7
4)
3 5/9 + (-2 1/4) - (-4 5/6) - 5 2/3 =
3 5/9 - 2 1/4 + 4 5/6 - 5 2/3 =
3 20/36 - 2 9/36 + 4 30/36 - 5 24/36 = 17/36
№2
42 - (-43) = 42 + 43 = 85 (°С) - разница температур
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Verified answer
Пошаговое объяснение:
№1
1)
2,4 + (-5,36) - (-0,84) + (-3,24) =
2,4 - 5,36 + 0,84 - 3,24 = -5,36
2)
-16,54 + (-9,31) - 11,27 - (-23,38) =
-16,54 - 9,31 - 11,27 + 23,38 = -13,74
3)
5 3/7 + (-2 1/4) - (-3 3/28) =
5 3/7 - 2 1/4 + 3 3/28 =
5 12/28 - 2 7/28 + 3 3/28 = 6 8/28 = 6 2/7
4)
3 5/9 + (-2 1/4) - (-4 5/6) - 5 2/3 =
3 5/9 - 2 1/4 + 4 5/6 - 5 2/3 =
3 20/36 - 2 9/36 + 4 30/36 - 5 24/36 = 17/36
№2
42 - (-43) = 42 + 43 = 85 (°С) - разница температур