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Mathematics
Carpenter
6 January, 08:30
Is (5,1) the solution for
2x-y = 9
X+4y=9
+5
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1
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Ruby Moss
6 January, 12:21
0
Use the substitution method
x = 5, y = 1
2x-y = 9
2 (5) - 1 = 9
Mutiply first then subtract
10-1 = 9
9 = 9
X+4y=9
5+4 (1) = 9
5+4 = 9
9 = 9
Answer : Yes
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