Question

Ex:63,64

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Dau coroana!

Answer 1

63.
a + 915 : 5 * 4 = 900
a + 183 * 4 = 900
a = 900 - 732
a = 168
a : 6 = 134 rest 5
a = 134 * 6 + 5
a = 804 + 5
a = 809
[(b - 26 : 2 + 2) * 5 - 1] * 2 = 88
[(b - 13 + 2) * 5 - 1] = 88 : 2
(b - 15) * 5 = 44 + 1
b - 15 = 45 : 5
b = 15 + 9
b = 24
c * [(3 * 9 + 189 : 7 - 50) : 4 + 3 * 3] = 30
c * [(27 + 27 - 50) : 4 + 9] = 30
c * [4 : 4 + 9] = 30
c * 10 = 30
c = 30 : 10
c = 3
64.
a = b + c
b = c + d
c = d * 96
d = 2
a) c = 2 * 96                c = 192
   b = 192 + 2             b = 194
   a = 194 + 192         a = 386
b) a + b + c + d = 386 + 194 + 192 + 2 = 774
c) (a + b) - (c + d) = (386 + 194) - (192 + 2) = 580 - 194 = 386
d) (a + b + c) : d = (386 + 194 + 192) : 2 = 772 : 2 = 386
e) (a + b) - c * d = (386 + 194) - 192 * 2 = 580 - 384 = 196