Seudónimo
Seudónimo
25-05-2016
Mathematics
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Please help on Photo question. Mathematics.
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Tareki
Tareki
25-05-2016
3x -y = 4 ------> eqn1
2x + y = 11 ------> eqn2
add the two equations
3x -y +2x +y = 11 + 4
5x = 15
x = 3
then sub. in eqn 2
2(3) + y =11
y= 11 -6
y = 5
the answer is ( 3, 5)
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