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Demetrius Carrillo
Mathematics
15 October, 08:14
Solve for substitution 8x+2y=13 and 4x+y=11
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Aileen
15 October, 08:20
0
Solving for X:
1) y=-8x+6.5 y=-4x+11
2) - 8x+6.5=-4x+11
3) - 8x=-4x+11-6.5 (Subtract 6.5 from both sides)
4) - 8x+4x=11-6.5 (Add 4x to both sides)
5) - 4x=4.5
5) x=-1.125
Solving for Y:
y=-8 (-1.125) + 6.5
y=9+6.5
y=15.5
y=-4 (-1.125) + 11
y=4.5+11
y=15.5
x=-1.125
y=15.5
or
(-1.125,15.5)
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