math

posted by wesley

The following simultaneous equations are given in base two 11x + 10y = 1100
101x - y =111
Find the value of x and y

1. Reiny

multiply the 2nd by 10
1010x - 10y = 1110

1010x - 10y = 1110
11x + 10y = 1100
...............................
1101x = 11010
x = 10

in the 1st
110 +10y = 1100
10y = 1100-110 = 110
y = 11

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