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Mathematics
Kaelyn George
11 December, 16:52
Solve the simultaneous equations 7x+5y=32
3x+4y=23
+1
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1
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Anabel Schmitt
11 December, 18:24
0
3 (7x+5y=32) and - 7 (3x+4y=23)
To make 21x+15=96 and - 21x-28y=-161
Then add them to be - 13y=-65
So y=-5
The substitute y
3x-20=23
3x=3
So x=1
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