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Aidyn Silva
Mathematics
27 February, 17:02
1. 2x - 3y = - 6
2. 8x + 4y = - 56
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Elaina
27 February, 17:13
0
Step-by-step explanation:
[tex]let / / 2x - 3y = - 6 / : / : / : / : / : eq. 1/ / 8x + 4y = - 56 / : / : / : / : / : eq. 2 / / now / : / / eq. 1 / times 4 - eq. 2 / / the / : we / : get / / - 16y = 32 / / y = - / frac{16}{8} = -2 / / and / : / / x = - 6
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Nikhil Bell
27 February, 17:14
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Step-by-step explanation:
2x - 3y = - 6 ... (1)
8x + 4y = - 56 ... (2) multiply equation (1) all through by 4
8x - 12y = - 24 ... (3)
Subtract eq (3) from (3)
8x + 4y - (8x - 12y) = - 56 - (-24)
8x + 4y - 8x + 12y = - 32
8x cancels out
4y + 12y = - 32
16y = - 32
y = -2
Substitute y = - 2 in eq (1)
2x - 3 (-2) = - 6
2X + 6 = - 6
2x = -6-6
2x = - 12
x = -6
Therefore, x = - 6, y = - 2.
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