Answer:
x = 3
y = -1
Step-by-step explanation:
(x-y) + (x+y) = 4 + 2
2x = 6
x = 3
sub x=3 into x+y=2
3+y=2
y=2-3
y=-1
Check by subbing x=3 and y=-1 into x-y=4
(3)-(-1) = 3+1 = 4
2 pounds ---- 100%
x pounds -----18%
x=(2*18)/100=36/100=0.36 pounds
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Step-by-step explanation:
962-39=923 so your balance would be $846
923-56=867
867-138=729
729+117=846