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15-03-2017
Mathematics

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Challenge What is the value of E? If Ax4=E B/4=E C+4=E D-4=E AND A+B+C+D=25

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Аноним Аноним

15-03-2017

Ax4 = E
A = E/4

B/4 = E
B = 4E

C+4 = E
C = E-4

D-4 = E
D = E+4

E/4 + 4E + E-4 + E+4 = 25
25/4 E = 25
E = 25 * 4/25
E = 4

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